Facebook is offering an instant article paywall that lets publishers keep 100 percent of subscription revenue.
Details here: https://www.dropbox.com/s/tdcq6ocqd1x3hoo/2019-07-25%2013.36%20Subscriptions%20within%20Facebook%20Instant%20Articles.mp4?dl=0
The page that talks about instant article paywall(https://developers.facebook.com/docs/instant-articles/subscriptions/) shows that the integration requires custom FB Pixels events being triggered, on login, and during purchase.
This level of integration doesn’t appear to be something that can be done in GTM, nor in BLOX templates, and seems to require BLOX software support.The page that discusses account linking (https://developers.facebook.com/docs/instant-articles/subscriptions/account-linking) mentions the need for “signed pixel events.”
That page shows sample code in PHP to generate the signed data, which requires access to the FB App secret, which would be unique to each BLOX website, just as the FB App is unique to that website.
This whole process requires running code server side to keep secrets. The “account linking” event requires an account_id to link the FB user to the BLOX user (for subscriber access details.) The only really reliable/secure account_id is the user’s UUID, which isn’t exposed in a cookie, so the front-end doesn’t have access to it .
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