MESSAGING_CONVERSATION_USER_ROLE_SEARCH MESSAGING Endpoint
  /rpc/messaging/?method=MESSAGING_CONVERSATION_USER_ROLE_SEARCH  
  For information on how to use Advanced Searches, click here  
  DETAILS    
  Prefix ConversationUserGroup  
  SUB SEARCHES    
  OPTIONS    
  Conversation Mandatory.  This search is a little unusual as you can only search on one conversation, which you must pass via this option
  AVAILABLE FIELDS TYPE  
  Conversation Numeric  
  ConversationText Text (50)  
  Id Numeric  
  UserRole Numeric  
  UserRoleText Text (50)  
  Notes Text (2000)  
       
  Audit Fields   Click here for more information
  RETURN  
  Selected Fields