curl '{backend_url}/admin/notifications/{id}' \
-H 'Authorization: Bearer {access_token}'
{
"notification": {
"id": "string",
"to": "string",
"channel": "email",
"template": "string",
"data": {},
"trigger_type": "order.created",
"resource_id": "string",
"resource_type": "order",
"receiver_id": "string",
"original_notification_id": "string",
"external_id": "string",
"provider_id": "string",
"created_at": "2019-08-24T14:15:22Z"
}
}