title: AWS Cognito: Add custom claim/attribute to JWT access token
body: <p>My app creates a custom attribute "userType" for each new signed-up user. Now I would like this "userType" claim/attribute to be added to the JWT access token whenever the user signs in or the token gets refreshed.</p>
  
  <p>Is there an option to tell cognito to add my custom claim/attribute to the JWT access token? (Without a pre token generation Lambda)</p>