post https://api.cloud.mbanq.com/v1/users
Use this API to enable Self-service Access.
Mbanq Cloud is able to store client logins directly within self service
access provisioned for a client. Additionally, it isolates data access by
allowing API calls associated with accounts, cards, loans, and transfers by
using the Client log-in rather than broader system users.
Note: One can either pass password or repeatPassword field or make the sendPasswordToEmail flag as true in which, the auto-generated password will be sent to user via email.