Webhook subscription event
Sent to each subscription registered with POST /v1/webhooks for the events it chose (v1.12.0). Same headers, HMAC signatures and 72-hour retry as signingEvent, under the same webhook secret. eventId equals the X-Tvarka-Idempotency-Key header: use it to process each event once. signing is the signing at the moment of the event, as GET /v1/signings/{signingId} shows it, without ceremony links. Answer 410 Gone to remove the subscription.
postWebhooksubscriptionEvent
Payload
Response
Acknowledged. Any 2xx stops redelivery.
Changes
Webhooks have no change history: a webhook is keyed by its event name rather than a path and method, so no recorded change can name it.