Creates a user.

A user is a type of principal that represents a user account.

The user is identifed by a unique username, which is usually an email address (e.g. [email protected]). The userName serves as the login ID that is used identify that user throughout the Intelligent Risk Platform.

The user can optionally be assigned to one or more user groups. Principals (user accounts and client applications) gain access rights and permissions to protected resources by being members of a user group that has been granted those access rights and permissions.