Subscription
USER_SUBSCRIPTION
- Description: Used to return user data when anything gets updated in the user collection. 
- Response: - Type : Object - Description: Returns a data object with all updated user data in user collection. 
 
MESSAGE_SUBSCRIPTION
- Description: Used to send a notification to corresponding user regarding a new message when anything gets updated in the message collection. 
- Response: - Type : Object - Description: Returns a data object with new message data in message collection. 
 
MATCH_SUBSCRIPTION
- Description: Used to send a notification to corresponding user regarding a new match or check if anyone liked a user when anything gets updated in the vote collection. 
- Response: - Type : Object - Description: Returns a data object with new match data or target data in vote collection.