Call Oracle Fusion SaaS Rest API without basic authentication

Hi,

We are looking to substitute basic authentication username/password combination used on OIC or from any external application that call Oracle Fusion SaaS Services with other authentication type like JWT tokens or OAuth2.0 Client Credentials. We tried the official recipes from Oracle for OAuth2.0 Client Credentials , but unfortunately, while using the generated token to call Fusion Rest API, it raise error "500 Internal Server Error". We found also another JWT Token recipe that depends on creating private key, generating certificate, and using this certificate to generate the token, but unfortunately, this recipe doesn't include all the required steps details for