An Invitation belongs to a conversation. A Conversation can have multiple invitations. The invitation has different metadata like the status or the token. This information could be further used for example to join a conversation with the provided PIN (token).
Expiration timestamp in milliseconds of the invitation elapsed since January 1, 1970 00:00:00 UTC.
The Id of the invitation.
Status of the the Invitation.
Token for the invitation, the PIN Number.