Get webhook endpoint details

Example response

{
  "success": true,
  "webhook": {
    "id": "wh_1a2b3c4d5e6f",
    "url": "https://api.yourcompany.com/webhooks/oilpriceapi",
    "events": [
      "price.updated",
      "drilling.rig_count.updated"
    ],
    "secret": "whsec_1234567890abcdef",
    "active": true,
    "created_at": "2025-08-10T10:30:00Z",
    "updated_at": "2025-08-10T10:30:00Z",
    "last_delivery": {
      "attempted_at": "2025-08-10T12:00:00Z",
      "status": "success",
      "response_code": 200
    }
  }
}