Validate SAML users programmatically

Hi team,

I’m looking for a way to validate whether a User is still active on a SAML/Enterprise connection, without having them login.

I found this document: Call an Identity Provider API which indicates I’m able to call an idp, however when I perform the steps with my own Okta connection, I don’t see the identities[0].access_token returned as suggested despite having the correct permissions.

Without relying on SCIM which is not yet supported by Auth0 - is there a suggested way to validate whether a user still exists on that connection?