Retrieves an alert routing rule

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

{
  "data": {
    "id": "325ecaf0-7a28-4034-b112-3ce8a2f30892",
    "type": "alert_routing_rules",
    "attributes": {
      "name": "Alert Routing Rule 1",
      "alerts_source_id": "1486c156-1cde-411e-92a7-f5b0191b68b0",
      "condition_type": "all",
      "enabled": false,
      "position": 1,
      "destination": {
        "id": "2ec04684-75fb-4c36-a980-62a2edcce8e6",
        "target_type": "EscalationPolicy",
        "target_id": "a33165b7-6fdb-4ee5-b973-416e68426d20",
        "created_at": "2025-08-12T10:43:30.712-07:00",
        "updated_at": "2025-08-12T10:43:30.712-07:00"
      },
      "created_at": "2025-08-12T10:43:30.640-07:00",
      "updated_at": "2025-08-12T10:43:30.640-07:00",
      "destinations": [
        {
          "id": "2ec04684-75fb-4c36-a980-62a2edcce8e6",
          "target_type": "EscalationPolicy",
          "target_id": "a33165b7-6fdb-4ee5-b973-416e68426d20",
          "created_at": "2025-08-12T10:43:30.712-07:00",
          "updated_at": "2025-08-12T10:43:30.712-07:00"
        }
      ],
      "conditions": []
    },
    "relationships": {
      "owning_teams": {
        "data": [
          {
            "id": "1574d8bd-8937-4cc5-83e7-bd93ad9d347d",
            "type": "groups"
          }
        ]
      }
    }
  }
}