List all webhooks

{
    "data": {
        "core_webhook": [
            {
                "contact": {
                    "id": 0,
                    "is_agent": true,
                    "display_name": "string"
                },
                "id": 0,
                "name": "string",
                "description": "string",
                "url": "string",
                "event": "string",
                "securetoken": "string",
                "policy": "string",
                "enabled": true,
                "created_at": "string",
                "updated_at": "string"
            }
        ],
        "core_webhook_aggregate": {
            "aggregate": {
                "count": 0
            }
        }
    },
    "message": "string",
    "success": true
}