Send a test ping to a webhook endpoint
curl -X POST "https://loading/api/v1/webhooks/whk_1234567890abcdef/test"{
"success": true,
"delivery_id": "string",
"event_id": "string",
"http_status": 0,
"response_body": "string",
"error_message": "string",
"duration_ms": 0
}Empty