[keycloak-user] Updating user

Hi, Is it possible to update a user remotely using this user's access token? I know that I can do it using Admin REST API but in this case I have to use the admin user's access token which I would like to avoid. We want to use our own user profile page + our backend service. User updates his/her info. UI calls our endpoint providing the user's token. Backend does some internal work related to the user's profile change then updates Keycloak. The missing part is how do we update the Keycloak user account using the user's token only and without obtaining the admin token. Something similar to /realms/<realmname>/protocol/openid-connect/userinfo but for updating the user's account. Or Admin REST API is the only way to do it? Thank you.