Can't Listen to Extension PubSub Whispers

Extensions
2

You need to listen on

Whispers are a set of optional PubSub channels that extensions can use. Each copy of an extension can register for "whisper-<userId>" where userId comes from the onAuthorized message. Attempts to listen to another userId will be blocked.

Where the userID is returned in onAuthorized and is the Opaque user ID. not the actual users Twitch UserID.

More on OpaqueId’s