Thinking about how to add push notifications to flotilla for closed communities — since push notifications have to be sent from a server, I need some way to get access to auth-gated content. The simple way to do this would be to just share the user's own session with the push server, but for obvious reasons that's a no-go.

The cleanest solution I can think of would be to allow an active NIP 46 session to delegate permissions to another session. All I really need is authorization to sign a `22242` event on behalf of a user.

Below is a draft NIP that introduces a `delegate` method to NIP 46 which "locks" the delegated session to the initially requested permissions: