Event payload

Every webhook is a POST with this JSON body:

{
  "id": "evt_2f8a1c9b0d4e",
  "event": "customer.updated",
  "timestamp": "2026-09-08T12:34:56Z",
  "data": {
    "id": "<resource_id>"
  }
}

Field	Description
`id`	Unique event id — use for idempotency
`event`	Event type string (see Events)
`timestamp`	When the event was produced (ISO 8601)
`data.id`	WizCommerce id of the affected resource

What is not in the payload

The body includes only the event metadata and data.id — not the full resource. Call the corresponding GET API with data.id for current state.