Get all events about collaborators changes in Box folder

Requirement for our application is to know about all events that happen in collaboration list for folders we are watching for. There is an admin user added as "Viewer" collaborator in all folders. But right now we are able to get only events that includes developer user (we use getEnterpriseEvents method https://developer.box.com/guides/events/for-enterprise/ and listen for any COLLABORATION_ events).

Let me give you an example: imagine we have user Dev (our admin user), user A and B (simple enterprise users). We are able to catch events if user Dev adds/removes user A to/from collaboration list or if user A adds/removes Dev user. But we don't get any new events if user A adds/removes user B (the interaction doesn't involve Dev user but Dev user is still a collaborator in the same folder).

Is there a way to catch those events? Will really appreciate any hints