[keycloak-user] UMA fine grained management in the client itself

Hello, I have difficulties finding the best way of protecting resources using Authorization Services or UMA. Here is the following problem: user1 creates resource/item/id1 user2 creates resource/item/id2 I want to be able in my nodejs confidential client to: 1. list users that have access to a specific item (eg: item/id1) 2. list all resources a user has access to (not only the ones he has, but also the ones other users shared with him) 3. permit a user to access a resource 4. remove the access of a user to a resource I saw in photoz UMA example a nice UI directly in keycloak. I would like to reproduce this tab directly in my client calling APIs to Keycloak. The reason is the tab in the account page doesnt give enough functionality for example if I want to join some detail about the resources that would only be available in my resource server. I saw the resource set api and a node package ( https://github.com/proficonf/keycloak-authz) that tries to manage the resources only but I can't find APIs that directly handle the 4 steps I just mentioned. Thanks