Sent from the simulator to the viewer. When an agent initially joins a session the AgentUpdatesBlock object will contain a list of session members including a boolean indicating they can use voice chat in this session, a boolean indicating they are allowed to moderate this session, and lastly a string which indicates another agent is entering the session with the Transition set to "ENTER" During the session lifetime updates on individuals are sent. During the update the booleans sent during the initial join are excluded with the exception of the Transition field. This indicates a new user entering or exiting the session with the string "ENTER" or "LEAVE" respectively.