Get an alert route

curl --request GET \
  --url https://api.rootly.com/v1/alert_routes/{id} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "id": "cac00314-23ab-448b-a85c-54e1bf6d39f7",
    "type": "alert_routes",
    "attributes": {
      "name": "Test Alert Route-1552",
      "enabled": true,
      "created_at": "2025-09-01T03:35:39.939-07:00",
      "updated_at": "2025-09-01T03:35:39.939-07:00",
      "alerts_source_ids": [],
      "owner_group_ids": []
    },
    "relationships": {
      "alert_routing_rules": {
        "data": []
      }
    }
  }
}