Headers
Unix timestamp (seconds since epoch) of when the webhook was sent - compatible with webhook-timestamp
Base64 encoded Ed25519 signature for webhook verification - compatible with webhook-signature
Body
Identifies the type of the resource.
event "event"
Identifies the type of resource.
"0ccc7b54-4df3-4bca-a65a-3da1ecc777f0"
The type of event being delivered.
fax.delivered "fax.delivered"
Response
The server must return an HTTP 200, otherwise we will reattempt delivery at the failover webhook URL.