Webservice Calendar/range

In JSON response

In case when appointment have more then one member, meetingMembers json is "meetingMembers":[{"id":1,"user":

,{"id":2,"user":{...}}]

of appointment have one member , meetingMembers json is "meetingMembers":{"id":1,"user":{...}}

in first case we have array of meeting members, in other case one record.