JWT authentication without DF user registration

For research purposes I have setup an account with Auth0 and the redirect URL for authentication is https://d2dm.auth0.com/login?client=2NAVqhfAa4oOiuMqBsQKCZLAND3wFYPN
I would like to implement their Node.js code to do the auth & access inside DF scripts but could not see any examples in DF docs to implement it.