Optional
chaining_Optional
contextJust any extra fields being applied to each event in the batch
Optional
feedThe sequential number of this post from the feed start (starting from 0) So the first post in the feed is 0, the second is 1 and so on
Optional
followWhether viewer is following media author or not
Optional
loggingFormat mediaId_userId
Unix timestamp (seconds, not milliseconds!) when the post was published
Username of the media owner
Client-side generated GUID for tracking navigation chains session