API endpoint for JSM Topics?

I’m trying to retrieve Topics set up for JSM Portals but as far as I can tell for regular (non-Admin) users these are only available as rendered HTML elements on the Portal landing screen. I see the admin area for these using GraphQL to retrieve them with a “operationName” = “topicsEditQuery” call supplying the cloudId and helpCenterAri, but I am not sure how to determine the helpCenterAri and I suspect this call will not work for non-Admin users. Is there another API endpoint available to retrieve this information?