ClientFingerprintUseCase   
    interface ClientFingerprintUseCase
Retrieves the Proteus-specific fingerprint of a client. If no session exists for the client, a new session is established.
Return
Result.Success if the fingerprint was retrieved successfully. Result.Failure if the fingerprint could not be retrieved.
Parameters
userId 
The user id of the client.
clientId 
The client id of the client.