Twitch EventSub: stream.online
the broadcaster's user ID.
the broadcaster's user login.
the broadcaster's user display name.
the id of the stream.
Unique ID for this EventSub message.
the timestamp (RFC3339) at which the stream went online.
The EventSub subscription type string (e.g. channel.follow).
channel.follow
The Instant when the EventSub notification was sent, parsed from ISO-8601.
the stream type: live, playlist, watch_party, premiere, or rerun.
live
playlist
watch_party
premiere
rerun