PubSub Moderator Action doesn't use user-id's

Chat and IRC
4

  1. When hosting a channel the “target_user_id” stays empty, will this be added?

  2. <strike>The fields "created_by_user_id" and "target_user_id" contain the id as strings instead of numbers.

Is it going to stay this way?

  1. There is a field “msg_id” that’s always present and contains just an empty string.
    Does it already have a purpose that should be implemented or is that coming in future?