Single backend for multiple users

Hi Team

Is there a way we can have single backend process for multiple Zerodha clients?
Every client will have their individual App but should have the same 'Redirect URL' where the process will create pool of client sessions and trade for multiple clients. By this we can incorporate multiple clients under single process.

The request message received doesn't have any client information, for e.g.
http://127.0.0.1:5000/login?request_token=************************&action=login&status=success. So not sure if this can be done without getting any client information in the request message. Is there a way Zerodha can add a client info in the request?

One way is to have multiple urls under the same process, but I am looking for an efficient solution here.