https://api.twitch.tv/helix/streams?user_id=anID&user_id=anotherID
Calling https://api.twitch.tv/helix/streams?user_id=71092938&user_id=39276140
I get two payloads for the two users and the user_id is in the payload
I add in https://api.twitch.tv/helix/streams?user_id=71092938&user_id=39276140&user_id=15185913(myself) and I get no third payload