[keycloak-user] Unable to create user with roles using Rest API

I have created a new Realm and added a role: "DOCTORS". POST to /admin/realms/{realm}/users With the following JSON: {"realmRoles":["DOCTORS"],"enabled":"true","username":"drhp"} This invocation creates the user, but the "DOCTORS" role is not assigned. The rest call is using a bearer token obtained from an administrative user in the master realm.