How change the response of userinfo endpoint

Hi 

I want implement F5 oAuth how IDP in Grafana and OpenShift.

The problem is that these applicaition use the endpoint /userinfo but require a response JSON format, the response of F5 its in JWT format.

Its possible change the F5 response of /userinfo endpoint?

its possible identify the clientid for apply this change of response only for this clientid?

Thanks for your help