ReadonlyalacornThe search session that answered with the track (alacorn_session_id).
ReadonlybrowseThe music browse session the track was found in (browse_session_id).
ReadonlystartWhere in the song the story starts, in milliseconds (audio_asset_start_time_in_ms).
ReadonlytrackThe track exactly as the song search returned it.
The song a story carries, as the music sticker editor's Done hands it over: the track as the search returned it, the search and browse sessions it was found in and the second of the song the story starts at. The developer passes it to the share actions of the editor.