Roblox Group API v1 wall posts subscribing API

As I was looking through some group api I saw this one v1/groups/{groupId}/wall/subscribe. so, i tried this api it returns subscribeReceipt

{
  "subscribeReceipt": "Can't show this :("
}

Now, I have no idea how to use subscribeReceipt thing.

In conclusion, I need help with the subscriptionReceipt. It will be really appreciated if you give some explanations about it

subscribeReceipt is internal and has no use to the frontend from what I recall.

You would have to poll request this endpoint 1 time every minute, and it would send notifications to the realtime namespace AdhocNotifications.GroupWall on https://realtime.roblox.com. Unfortunately, group wall subscriptions are unstable and doesn’t seem to work properly anymore.

Is there’s any effective way to get group wall when there’s a new wall created from multiple groups ?