At the moment, there are ways to retrieve:
- a seller based on a wallet address
 
- OR a buyer based on a wallet address
 
- OR a DR based on a wallet address
 
The idea of such a new service would allow to return all entities (seller, buyer, DR, agent, ...) related to a given wallet address, in only 1 call.
Ideally the subgraph should represent this "attachment" so that a simple graphQL request would return all the entities