The ID of the conference.
Can be used by developers to keep track of conferences, should not be
displayed to users.
The ID value is formed differently for each conference solution type:
The conference solution, such as Google Meet.
Unset for a conference with a failed create request.
Either conferenceSolution and at least one entryPoint, or createRequest is
required.
Information about individual conference entry points, such as URLs or
phone numbers.
All of them must belong to the same conference.
Either conferenceSolution and at least one entryPoint, or createRequest is
required.
The signature of the conference data.
Generated on server side.
Unset for a conference with a failed create request.
Optional for a conference with a pending create request.