Headers: i) authorization - Type: String; Return:
- If conversation_id is passed: Conversation Participants
- If user_id is passed: Conversations related to the user (participant);
Functionality: Check for existing conversation between two users or create a new one;
Query Params: i) source_user_id - Type:String ; Required ; User initiating the conversation
ii) target_user_id - Type:String ; Required ; User being targeted for conversation
Accept: NA;
Headers: i) authorization - Type: String; Return: Conversation ID and creation status;