keystone/docs/guide/src/docbkx/samples/getuser.json

{"user":
    {
      "groups": {
        "values": [
          {
            "tenantId" : "1234",
            "id": "Admin"
          }
        ]},
      "id": "jqsmith",
      "tenantId": "1234",
      "email": "john.smith@example.org",
      "enabled": true
    }
}