DBSQL subscriptions method returning `410: Gone`

Salty
New Contributor II

We've been using the DQBSQL API to perform CRUD on queries and alerts.

Part of that process added a slack channel as alert destination using the /subscriptions element on an alert post as below.

As of today I am getting a 410 'Gone' error from the API on trying to add a subscription.

I understand the DQBSQL API is preview and therefore subject to change wihtout notice, however we are a slack heavy org and it was very useful!

Does anyone know of a workaround?

ALERTS_API = DOMAIN + '/api/2.0/preview/sql/alerts'
response = requests.post(
    ALERTS_API + '/' + alertId + '/subscriptions'
    , headers=HEADER
    , data=jsonPayload
    )
Exception: Error adding alert subscription: 410; Reason: Gone