Rotschopf Amazone Syren De Mer Las Lezdom Spass Mit Winzigen Teen Scarlett Sage, String Tanga Porn, Schoen Muschi, Dicke Titten Keuln, Tg Sex Heute, Blonde Politesse Treibt Es In Deutschem Wald, Busty German Milf Casey Deluxe My Hot Summer, Aurora Snow Anal, Tanten Ficken, Youpornpl, Www Youporn Com 2, Sex Im Fitness Studio Mit Deutscher Blondine, Private Sex Videos Deutsch, Reiten Sex Tube Deutsch, Chessie Kay, Halsband Sex, Brutaler Sex Schlampe Wird Im Rollenspiel Vergewaltigt, Deutsche P Kostenlos, Deutsche Frau Berger Wird In Alle Loecher Gefickt, Pregnant Doctor Porn, Gratis Porno Lexy Roxx, Two Naughty German Milfs Get Gangbanged Jetztfickmichperiod, Moms Nackt, Hm Umkleide Porn, Anal Sissy, Die Natuerliche Ziemlich Dralle Blasse Schlampe Jessica Ryan Wird Mit Bbc Gestreckt, Doggy Anal Porn, Nackt Putzfrau, Kostenlose Pornographie, Laracumkitten Stream, Big Brazzers, Sex Im Harem, Anal Massagen, Cristi Ann, Annina Ucatis Porn, Krankenhauspornos, Erster Faustfick, Latex Luder, Best Gangbang Porn, Sklave Wird Von Herrin Angespuckt, Outdoor Doggystyle, Schoene Frauen Aersche, Nenetl Avril Masturbiert In Ihrem Engen Latex Krankenschwester Uniform, German Sluts Enjoy Watersport, Sex In Klamotten, Aloa Tube Com, Y Porno, Reife Alte Damen, In Der Kueche Das Deutsche Maedel Gefickt, Wwwyouporm, Bruenette Bella Marchelli Wird Hart Gefickt Oral Und Anal, Free Porno Vids, Hot Sexi Video, Anal Fail Compilation, Wann Ist Ein Penis Dick, Big Tit Hentai Porn, Vintage Muschi, Jung Und Rasiert, Geile Reife Oma, Czech Csting, German Granny Gets A Huge Dildo, Mutter Im Urlaub Gefickt, Blonde Hexe Wichsanleitung, Frauen In Geilen Strumpfhosen, Booty Xxx, Czechmassage, Sex Tanz Tube, Sperma Reinspritzen, Porno Haarig Deutsch, Hot Stepsister Porn, Morgan Lee Bekommt Ihr Asiatisches Pink Und Stinkt Von Bbc, Live German Sex Shows Sault Ste Marie Mi Webcams Wwwperiod, Sexy Teen Nylon, Sex Sauna, Frankfurt Hure, Wwwxhanstercom, Anporn, Katie Morgen, Geile Schwaenze Blasen, German Milf Fucks Outdoors, Die Trauzeugen Ag Stream, Juliareavesproductions Hausfrauen Luder Scene 3 Naked Movies Boobs Penetration Hardcore, Geiles Girl Laesst Sich Vom Riesenschwanz Vor Der Webcam Ficken, Monster Cocks Anal, Kostenloser Sex Bremerhaven, 69 Orgasmus, Schwarzer Porn, Duenne Deutsche Punk Schlampe In Der Dusche Gepoppt, Geile Muschis Am Strand, Puerto Rico Porn, Fun Movies Horny German Mature, Real Deutsch Sex Tube, Japanische Frau Nacke, Heiss Und Geil Holly Price Dauert Ein Besuch Zu Den Schliessfaechern, Sex Anzeigen Ingolstadt, Wife Fucks Sexy Friend From Bar, Deutsches Normales Maedchen Verfuehrt Ihren Freund In Schoenem Catsuit, Club Seventeen Hd, Lesben Porno Mutter Tochter, Free German Cam Porn, Wunderschoene European Milf Bettina Dicapri Gefickt In Mish Pose Auf Dem Rand Der Sofa, Teen6, Geiler Fick Mit Blonder Schlampe Auf Einem Feld, Pure Porn, Wichs Videos, Porn Film Deutsch, Pornoenge, Frau Holt Mann Ein Runter, Lehrerin Gebumst, Xnxxcome, Erotische Massage Spandau, Piss Deepthroat, Teen Forced Gangbang, Xhmester, Jane Wilde Arbeitet Mit Ihrem Arsch Und Ihrer Cremigen Fotze An Monster Bbc, Sexsternchen, Baberotica Model Page, Asia Teen Anal, Sex Bitburg, Nylon Schlampe, Grossmutter Haarige Fotze Geleckt Und Dann Gefickt, Doggy Dildo, Squirten Lernen, Sie Stoehnt, Der Perverse Firmenchef Und Die Notgeile Kollegin, Viola O Porn, Nubilescom, Telefonsexnummern, 69 Orgasmus, Pornos Hard, Krystal Boyd Reddit, Wife Bbc Porn, My Dirty Hobby Amateur Brunette Gets A Creampie By A Big Dick, Lana Rhoades Mandingo, Sex Mit Schlafenden Maedchen, Flotter Dreier Mit Julia Jones Und Ihrer Freundin, Jungspund Befummelt Seine Stief Mutti Im Schlaf Und Bekommt Einen Fick, Alle Natuerlichen Blonde Mit Riesigen Arsch Und Titten Reitet Einen Schwanz Im Pov, Piper Perri Free Porn, Fantasyhd Porn, Analficken Deutsch, Kostueme Fuer Dicke Frauen, Passauladys De, Nude Video, Ria Hill Anal, Momxxx, Adrianadelrossi, Escortservice Baden Baden, Schlafende Mutter Ficken, Sexsklavin Werden, Reifeporn, Dicke Nippel Und Behaarte Fotze, Sex Sonthofen, Dex Hamstercom, Deutsche Fotzen, German Milf Masturbating Outdoors, Magic Porno, Junge Blonde Nadine Beim Frauenarzt Spreitzer Durch Gefickt, Kassel Hobbyhuren, This Girl Sucks, Teen Extrem Fisting, Die Beliebtesten Videos Von Tag Sex Mit Inderin, Speckige Weiber Im Porno Deutsch Durch Gerammelt, Erotikkino Nuernberg, Superporn, Skyla Novea, Trrn Sex Tube, Geschlechtsverkehr Nackt, Porno Eier, Frauen Mastubiren, Filme Pormo Gratis, Die Zierliche Stieftochter Kenzie Reeves Wird Von Papas Monsterschwanz Pov Zerstoert, Sie Will Anal, Fotzen Saft, Fotze Wichsen Und Sperma Schlucken, Sex Nuernberg, Stuermisch Teen Nutzung Huebscher Junger Mann In Dreier Sitzung, Titten Bumsen, Blassen Porno, Sauna Sex Video, Simones Hausbesuche, George Uhl Porn, Dicke Hausfrau Briana Banks Verfuehrt Ihren Ehemann Neffe, Teen Fuck Orgy, Dildo Gebraucht, Teen Fick Dreier, Real Street Hooker Porn, Heisser Teensex, Tschechische Sexfilme, Hot Pants Video, X Ideo, Camping Fick, Kerstin Niemann Heike Graf Beim Geilen Dreier, Geile Blonde Hacke Carter Cruise Hart Gefickt In Flotter Dreier, Wwwfandoradode, Guter Pornde, Die Beliebtesten Videos Von Tag Deutsche Milf Poppen, Erotik Anzeigen Sie Sucht Ihn, Fick Mit Mama, Schlamm Porn, Zwei Geile Junge Bitches Von Riesen Pimmel In Den Arsch Gefickt Nach Party, Kostenlose Nacktbilder Reifer Frauen, Deutsche Erotic Filme, Cum Porno, Domina Fickt Sklave, German Huge Tits Mperiod, Hantai Porn, German Teen Blowjob, Erotikanzeigen Hamburg, Grosse Schwaenze Wichsen, Molliges Oma Flittchen Bekommt Den Alten Schlitz Gefickt, Nutten In Md, Sexx Teen, Redtube Orgasm, G Punkt Massage Video, Misty Stone Pornos Sexfilme Kostenlos Frauporno, Bruenette Schlampen Mit Gebraeunter Haut Fickt Einen Kerl Nach Dem Oel Massage, Ashley Alban Joi, Nackte Frauen Im Buero, Teen Squirt Porn, Daisy Marie Porno, Heimlich Reingespritzt, Playboy Bunny Porn, German Amateur Pisses, Deutsch Amateur Sex, Fulda Ladies Anfang, Porno Natur, Schwarze Muschi, Katya Clover Pissing, Bdsm Kontaktanzeige, Drecksau Ficken, Tele Cam Sex, Sex Im Buss, Ficken In Ilmenau, Nordsex, Frau Hat Sex Mit Puppe, Olga Cabaeva, Geile Milf Mit Dicken Titten Bekommt Besuch Von Jungen Typen Zum Ficken, Deutsche Geile Fickfilme, Nikita Porn, Schoene Porno, Stiefel Porno, Nutten Party, Sexkontakte Vechta, Nuten Ulm, German Mature Fuck With User Bareback, Fick Spiele, Porn Live Webcam, Sidney Dark In Need Of A Good Fuck From Loyal Fanexcl, Creampi Gangbang, X Hamstercom 1, Fujiko Kano Porn, Www Ts Ladies, Intimmassage Bei Frauen, Miami Spice Porno, Best Pornhub, Porno Sinema, Gruppenorgie, Nauty America, Big Fat Titts, Hot Blonde Bitch, Sexkontakte Schweiz, Die Neusten Pornofilme, Rihanna Porno, Zoo Gay Sex Tube, Deutsche Promis Beim Sex, Sie Sucht Ihn Sex Hessen, Mutter Und Sohn Ficken Im Hotel, Deutsch Milf Ficken Zwei Jungs, Laengste Videos Nach Tag Teen, Verspielt Teen Missy Sweet Geniesst Saugen Riesigen Penis Das Gehoert Zu Geilen Kerl Voodoo, Maenner In Strapsen, Krystal Boyd Hd, Deutsche Milf Bekommt Ficksahne Auf Dem Klo, Hairy Bbw Porn, Wwwnaughtyamericacom, Unterm Rock Gefilmt, Sexfilme Umsonst Schauen, Kate England Hd, Junge German Lutschnutte Entsaftet Brav, Fake Sperma, Geile Reife Nackte Frauen, Dicke Fette Busen, Privat Sex Saarland, Deutsche Schlampe Ficken, Schweinische Pornos, Pristine Edge, Analverkehr Unter Maennern, Groser Schwanz, Xxhammster, Lana Hoades, Kambodschanische Mit Riesigen Natuerlichen Titten Bekommt Fick, Sex Frei Filme, Filme Xnx, Cum On Pussy, Porno Kreskowki, Yasmine De Leon, Exhibitionist Porno, Blonde Hure Yessy Bekommt Ihren Anus Gebohrt In Flotter Dreier, Tanflix, Gratis Video Porno, Strange Young Men He Fuck Young Girl Outdoor And Cum On Tits, Gruppensex Lesben, Free Big Ass Porn Videos, Bdsm Kostenlos, Isabella De Santos, Xhamster Blow, Huge Tits Porn Videos, Hidden Cam China Porn, German Hard Anal, Www Eporner, Suesse Bruenette Mit Schoenen Schlanken Beine Wird Gefickt Doggy Style, Steifer Kitzler, Deutsche Duenne Aeltere Frau In Geilen Lackstiefeln Bumst Mit Sikikon Busen, Lesbiennes Amatrices, Deutsche Milf Privat, Beim Ficken Gefilmt, German Mature Banged In The Kitchen, Mature Porno Hd, Penis Im Mund, Wwwfreesexcom, Mega Fotzen, Sounding Pornos, Erotik Massage Berlin Friedrichshain, Bordell Crailsheim, Wackelbrueste, Milf Hot Pants, Nackte Geile Frauen, Enge Teen Pussy, Frau Mit Fettem Arsch Beim Fick, Lespen Beim Sex, Hijap Porno, Porno Im Club, British Handjob, Geile Nackte Paare, Loli Sex Cam, Wunderbare Kraus Xianna Hill Ist Gluecklich Zu Sehen Grossen Schwarzen Schwanz Wie Es Ist Zeit Fuer, Anal Dick, Natural Porn Hd, Blond Xxx, Body Cumshot Compilation, Dripping Wet Pussy, Teenylesben, Nackt In Kueche, Redhead Milf Takes A Long Ride, Suesses Paar Ficken Mit Mexi Rose, Taxi Xxx, Transe In Keuln, Sex Massage Erfurt, Siki Izle Com, Old Und Jung Porno, Bdsm Massage, Sex Soest, Sex In Eisleben, Sex Xhamster, Maedchen Blaest Schwanz, Live Sex Webcam Tube, Karinahh Porno, Heimlich Sex, Frische Junge Moesen, 6 Relax De, Katy Perry Titten, Anal Chubby, Gay Porno Online, Sie Bietet Sex Berlin, Vidas Liberales, Hot Sex Hidden Cam, Dirndl Topless, Fussfetisch Club, Fette Mutti, Huebsche Kurvige Maedchen Fahrt Und Saugen Einen Harten Schwanz, Pornokino In Duisburg, Private Sextreffen Nrw, Naked In Public Getting Fucked On A Stranger Carexcl, Huendchenstellung Sex, Junge Schlampe, My Free Sex Cam, Erocom Date Deutsche Blondine Mit Natuerlichen Bruesten Beim Blinddate Fickdate, Jungschwaenze, Dildo Bondage, Dinotubs, Lisa Ann Lesbian, Last Of Us Hentai, Mega Sperma, Rothaarige Teens Nackt, Asia Porno Hd, Monster Boobs Porn, Hclipscom, Island Fever Porn, Markt De Er Sucht Ihn Bielefeld, Men Sex Tube, Sexdates Finden, 30cm Penis, Umgekehrter Gangbang, Heel Porn, Negersex, Michael Schaefer Lebach, Teenie Schlampe Beim Pissen Erwischt Und Gefickt, Sister Masturbating, Fuesse Sexy, Marryfox Nude, Porn Milf Video, Suesse Fotze, Erotikquoka, Www Nxnxx, Amateur Milf Video, Good Old School Bukkake German Goo Girls, Ferro Network, Sandra De Marco, Knock Knock Sex Scene Tube, Kostenlose Bdsm Porno, Deutscher Blonder Schlampe Ordentlich Das Arschloch Gespalten, Amateur Teen Webcam, Huren Jena, Suche Nach Tag Privat Sex, Fick Im Busch, Teeny Wird Gefickt, Mia Malkova Blowjob, Deutscher Porno Mit Alexandra Ross, Blonde Frauenzimmer Angelina Oeffnet Ihre Loecher Breit Fuer Zwei Schwaenze, Prostituta Sex Tube, Sex Owl, Frauen Suchen Sex Kostenlos, Ziemlich Kolumbianische Canela Skin Gibt Rimjob Und Bekommt Haarige Fotze Gefickt, Dreck Schlampe Lutscht Ihm Die Rosette Aus, Jasmine Webb, New Kids Klamotten, Misty Stone Pornos Sexfilme Kostenlos Frauporno, Scharfe Teens Nackt, Dreierfick Mit Der Deutschen Mel Miley Und Ihrer Freundin, Sexvideos Kostenfrei, Japanische Sekretaerin Wird Von Ihrem Chef Im Restaurant, Anal Sex Mann, Sex Tape Xxx, Gratis Videos Teens, Mama Fickt Am Besten, Finest German Bbw Fucksexcl, Schoene Katy Alvarez Zieht Sich Aus Und Geht Solo Im Freien Fuer Mehr Emotionen, Bei Fick Im Freien Bekommt Die Deutsche Einen Facial, Lisa Ann Hardcore, Paulina Beobachtet Wie Ihr Freund Bohrer Rasiert Schlitz Geile Studentin Schlampen, Deutsche Creampie Porno, Indian Live Cam Porn, Xnxx Redtube, Porn Alm, Tittenfick Gifs, Annina Ucatis PornoFacebook Conversions API Guide | Empower Agency

Facebook Conversions API guide: What is it and why you should use it?

Julia Tatai

By Julia Tatai

In

Reading Time: 7 minutes

We’re still implementing the Facebook Conversion API for lots of clients and learning about the best setup for different platforms. We’re updating this Facebook Conversion API guide as we learn more!

At Empower, we’ve talked a lot about the changes iOS14 is bringing to Facebook ads and how the Facebook Pixel is now less effective due to ad blockers and privacy features on Apple devices.

You can read our iOS14 and Facebook Ads: Impact summary and checklist for how to prepare for more of a background to this.

For lots of our nonprofit clients, they’ve been trying to figure out ways to keep as much conversion data as possible and to make that data as accurate as possible, now that they’re not able to rely on the Facebook Pixel.

Because that’s what we’re seeing in the Facebook Ads campaigns we run: lots of fluctuation in results and a mismatch in the data we see in Facebook and through organisations’ own websites and CRMs.

This is important: The more accurate your data is, the better Facebook will be able to optimise your ad campaigns for your desired result and the more accurate any Facebook ad campaigns you have running will perform. 

How can you make sure your Facebook Ads data is as complete and accurate as possible.

That’s where Facebook’s Conversions API comes in.

Here we’ll go through what you need to know about Facebook Conversions API, its benefits, how to install it correctly and how to check the Facebook Conversions API is tracking conversions correctly.

What is the Facebook Conversions API?

The Facebook Conversions API, formerly known as Facebook Server-Side API, allows advertisers to send web events from their servers to Facebook. 

The Facebook Conversions API will help you push event and conversion data to Facebook Ads Manager while maintaining user privacy. That’s why there’s a lot of talk about Facebook Conversions API with Facebook ad changes due to iOS 14.

With Facebook Conversions API, you can send data you capture from your website backend (like WordPress for example) to Facebook Ads Manager. 

This is similar to the Facebook Pixel. Place the pixel on your organisation’s website and Facebook tracks your event and conversion data, and then shows that data in Ads Manager. 

So what’s the difference between the Facebook Pixel and Facebook’s Conversion API?

When you use the Facebook Pixel, it’s Facebook is the one doing the capturing and data collection. When you use the Facebook Conversions API, you collect the data through your website then share that data (customer id, order id, purchase events, etc) with Facebook.

The Facebook Conversions API will help you push conversion data to Facebook Ads Manager while maintaining user privacy.
The Facebook Conversions API will help you push conversion data to Facebook Ads Manager while maintaining user privacy.

Benefits of Facebook’s Conversions API

So what are the benefits of using Facebook’s Conversions API?

The Conversions API can help you to:

  • Reduce your cost per result: When you use the Conversions API alongside the Facebook Pixel, it creates more reliable data which helps Facebook’s algorithm learn what works best and so reduce cost per action.
  • Optimise ads for actions that happen on your website: By more accurately tracking events that take place off Facebook, this helps Facebook show your ads to audiences who are more likely to generate value for your organisation.
  • Improve measurement: The Facebook Conversions API can help you better measure ad performance and attribution across your campaigns.
  • Increase data control: When implemented separately from the Facebook Pixel, the Facebook Conversions API gives you more control over what data you share with Facebook and when you share it.

How the Facebook Conversions API works with your Facebook Pixel

The Facebook Conversions API is not a replacement for your Facebook Pixel nor is it the ultimate solution to keep everything as it once was before iOS 14. It’s here for you to use in parallel with your Facebook Pixel.

The Facebook Pixel allows Facebook to do two main things:

  1. Track and collect user activity and match it to a Facebook profile
  2. Measure events and conversions to track ad performance

Before all the changes with iOS14, this is all we had needed for the most part. The only major cause for reporting discrepancies from your CRM data and with Facebook’s data was due to ad blockers. 

Now with tracking limits imposed by Apple and the necessary changes Facebook has to make to comply with iOS updates, there will be an even bigger gap in conversion data.

This is where Facebook Conversions API comes in. With data from the Facebook pixel and your “server” (such as your website and your CRM data), Facebook can improve reporting and measuring conversion events, giving you much more accurate data to work with.

What kind of events can you track with the Facebook Conversions API?

You can choose to track any of the events you’re already familiar with using the Facebook Conversions API. 

For example, you can track content views, pageviews, newsletter signups, purchases and donations.

You’re probably already familiar with your most important events, but here’s what we recommend for nonprofits:

  • Donations
  • Purchases
  • Page view
  • Email sign up

With these core events at the minimum, you’ll be able to get the most out of Facebook Conversions API, with improved and more accurate ad reporting and management.

How to set up the Facebook Conversion API

Before getting started with the Facebook Conversions API, there are some things you need to do first:

  • Installing the Facebook Pixel
  • Using Facebook Business Manager. 

Facebook has a number of partner integrations with various platforms you can use, which is by far the easiest way to implement it. Here’s how:

  1. Go to your Facebook Ads Manager
  2. Navigate to the “Events Manager” section
  3. Click settings. When you scroll down, you’ll see information about Facebook Conversions API
  4. Click “Choose a partner” in the integration settings
  5. Click the link for the platform your organisation uses and follow the guides.

Facebook has partner integrations with:

  • Zapier
  • WordPress
  • WooCommerce

If you want to set up Conversions API through one of these platforms, Facebook has an automatic set up process for each one. Just follow the guide above and click the link for the platform your organisation uses.

Luckily, over 30% of websites are powered by WordPress, so setting the Facebook Conversion API up is as simple as installing the Facebook for WordPress plugin.

And if you don’t have WordPress, then Zapier has integrations with thousands of other websites, so following Zapier’s Facebook Conversion API setup guide should enable you to integrate with your organisation’s systems. 

One more thing: It’s important you don’t have your Facebook Pixel duplicated on your website and triggering more than once for individual events. So if you have your Facebook Pixel hardcoded on your site, you’ll want to remove it.

Testing you Facebook Conversion API setup

Successfully followed the guide above? Nice work!

Now there’s two things to test to make sure the Facebook Conversion API is working correctly for your organisation.

1. Facebook Pixel Helper

Download the Facebook Pixel Helper browser extension for Chrome. Go to your site, click the Facebook Pixel Helper extension, and it will diagnose whether there are any issues with your Facebook Pixel implementation.

2. Payload Helper Tool

Test whether the data you’re sending through the Facebook Conversions API is correct by using Facebook’s Payload Helper tool. Just enter your Pixel ID in the “test this payload” box and click the “send to test events” button.

Facebook's Payload Helper Tool
A snapshot of Facebook’s Payload Helper Tool, which can help make sure the Facebook Conversion API is working correctly.

Can you set up the Facebook Conversions API manually?

If you want complete control of your Facebook Conversions API implementation or are using a platform without a native integration, you’ll have to resort to setting it up manually, which will require a degree of coding knowledge.

If you don’t have coding knowledge or access to a developer, first you should try what’s possible with Zapier’s Facebook Conversion integration, where you can “custom” integrate various other platforms without any coding. They also have a blog post with ideas for integrating the Conversions API with other platforms.

If you do go for a custom implementation, you’ll be able to own and have full control over the data you collect, which has the following benefits:

  • Centralised place for all your tracking and data with less user privacy issues
  • Protection with other platforms who in the future may suffer from the same tracking issues impacting Facebook
  • First party tracking on your own subdomain to mitigate data loss from ad blockers
  • Ability to setup automated error and data monitoring for all tracking

Learn how to set this up with Elevar’s guide.

What to do after you’ve setup the Facebook Conversions API

Implementing the Facebook Conversions API is just the first step toward server-side tracking. 

There are a lot of benefits to server-side tracking and based on current privacy and data trends, we expect to see server-side tracking relied on a lot more.

Here’s what we recommend to do next:

  • Test whether your Facebook Pixel is functioning correctly with Facebook’s Pixel Helper browser extension for Google Chrome
  • Test your Conversions API implementation with Facebook’s Payload Helper
  • After a week with your Conversions API implemented, monitor all your events’ deduplication and matching performance in Events Manager

Remember: The more accurate your data is, the better Facebook will be able to optimise your ad campaigns for your desired result and the more accurate any Facebook ad automations you have set up will perform, so it’s important to test that you’ve set up the Facebook Conversions API correctly. 

Facebook Conversions API guide: What is it and why you should use it?
Using the Facebook Conversions API, you can gain back reported conversions for your Facebook ads your Facebook Pixel couldn’t capture.

Facebook Conversions API: Key Takeaways

  • Install the Conversions API to get more accurate data: Using the Facebook Conversions API, you can gain back reported conversions for your Facebook ads your Facebook Pixel couldn’t capture
  • Keep using the Facebook Pixel: It is not a replacement for your Facebook pixel, they should be ran in parallel
  • The Conversions API helps Facebook’s optimisation algorithm: More conversion data using both Facebook Conversions API and the Pixel will help Facebook’s ad optimisation algorithm be more effective
  • Use integrations if you can: Using the Facebook Conversions API is not difficult, especially if you’re using a platform with a direct integration, like WordPress

Further Reading on Facebook Conversions API