Group my users?

Thanks. Understood. Is it correct that the returned metadata item should be an object with any properties I desire? E.g. script snippet:

callback(null, {
  user_id: 'MyConn|123456',
  email: 'kjell@company.com',
  email_verified: true,
  metadata: {
    company_id: 654321,
    priority_level: 'Gold'
  }
});