Generate PaperConnect Login URL

This API generates a one-time login URL that allows a user to sign in.

1. Your backend calls this API to get a PaperConnect login URL.
2. Your frontend navigates the user to this URL.
3. When the user completes the form, they will be redirected to redirectUrl with a temporary access token as a query parameter.
4. Your backend should exchange this temporary access token for a verified payload by calling Get User Details by Access Token.

See PaperConnect for more details.