I set up a WebHook and that is working fine, and I set up a Renewal Event Filter when creating the subscription.
I receive the first webhook call with this as the event, but I dont understand what the documentation means about a Put to the webhook endpoint
I can of course call Renew the normal way but that doesnt seem to cause subsequent calls to the webhook with the expiration event
Update & Renew a Webhook
To update a webhook, make a
PUT call to the webhook endpoint with the required event filters specified in the request body. Each
PUT call, either sent with the event filters or with an empty body, automatically renews the subscription, updating its expiration time.
The renew a webhook, you can also make a
POST call to the subscription renew endpoint.