Reference

when your stream goes offline.

Stream Information

• [[[event.broadcaster_user_id]]] :: Your Twitch ID
• [[[event.broadcaster_user_login]]] :: Your username
• [[[event.broadcaster_user_name]]] :: Your display name
• [[[event.broadcaster_user_avatar]]] :: Your profile image URL

note: maps to the Twitch EventSub event stream.offline. Useful for logging, but viewers won't see alerts since the stream went offline.