[keycloak-user] Keycloak Even when user is authenticated

[Mario Peck]

I am working on a web application (war) that uses keycloak for
authentication/roles.
The application is running on Wildfly 10. Using the wildfly keycloak
adapter.
I need to listen/detect when a user is authenticated by keycloak. There is
some work the application must perform when a user is logged in for the
first time.
Is there some event (Observable message) , or some type of listener that I
can register to get notified of this? (when a user is authenticated).
Thanks to any tips/help
Mario