Surface a like is tapped on. It selects the analytics field set the app
attaches to the signed body: the feed surfaces (feed_timeline,
feed_short_url) carry inventory_source and logging_info_token, while the
reels viewer carries the chaining_* session fields and media_pct_watched.
Surface a like is tapped on. It selects the analytics field set the app attaches to the signed body: the feed surfaces (
feed_timeline,feed_short_url) carryinventory_sourceandlogging_info_token, while the reels viewer carries thechaining_*session fields andmedia_pct_watched.