entityId
The identifier of the user or resource for which to update mailbox permissions.
The identifier can be UserId, ResourceID, or Group Id, Username, Resourcename, or Groupname, or email.
Entity ID: 12345678-1234-1234-1234-123456789012, r-0123456789a0123456789b0123456789, or S-1-1-12-1234567890-123456789-123456789-1234
Email address: entity@domain.tld
Entity name: entity