id=self to reference the user associated to the current API token.
modify usersRequired if you want to modify any user other than yourself
modify user-groupsRequired if you want to modify the groups associated to a user, unless you are a group admin
modify user-rolesRequired if you want to modify the roles associated to a user
read permissionsRequired to access the permissions associated with a user
read sourcesRequired to access the sources associated with a user