Returns a GroupMemberSummary by idget https://yourorgsite.com/api/GroupMemberSummary/{GroupMemberSummaryId}Returns an instance of GroupMemberSummary by idGroupMemberSummary If you have an id with a ':', you will need to specify this as a URL parameter and use the /api/GroupMemberSummary endpoint. Example https://testapicloud.imis.com/api/GroupMemberSummary?GroupMemberId=3YEAR:18542