ReadonlyenterThe device uptime when the pog was drawn, in milliseconds.
ReadonlyentityThe event's entity_id: the reel id and the suffix the logger minted for the pog when its tray was
drawn. Every departure of that draw names the same value; a new draw mints a new one.
ReadonlyexitThe device uptime when the feed was left, in milliseconds.
ReadonlyitemReadonlynavThe feed's navigation chain, in the header form (MainFeedFragment:feed_timeline:…).
ReadonlytrayThe request's tray_session_id: the process's tray session.
ReadonlyvisibleThe milliseconds the pog stayed on screen (sum_duration_ms).
ReadonlywholeThe pog was whole on screen (a pog cut by the screen's edge never reached 100 %).
What the viewpoint logger recorded of one tray pog while the feed was in front.