Is it possible to activate event hooks for organisations that use my app integration?

I have created an app integration that gets users to log in and then uses their Okta access token to log into a separate service. This works fine, however it creates a problem where a user can log out of Okta but remain logged in to the other service. Ideally this could be solved by being notified when a user logs out and then logging out of the separate service.

I have found the event hook API which can send a request when a user logs out of Okta to a given endpoint. My question is: if an external organisation adds my integration to their organisation, will I be able to receive event hook requests when the users in that external organisation log out?