thanks for bringing this up!
should be a straight forward fix (famous last words). i will work on this first thing next week.
for now (i’m not certain this will work but i’m pretty sure), if you wanted to change the usage of channelId in the calls to createSignedToken here - https://github.com/twitchdev/developer-rig/blob/master/src/util/token.js#L8 that should get you what you want.