Retrieves an alert routing rule

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

{
  "data": {
    "id": "c71146ab-34f2-4f76-9a13-4ed2c86b3143",
    "type": "alert_routing_rules",
    "attributes": {
      "name": "Alert Routing Rule 3",
      "alerts_source_id": "1fca3afe-8263-434a-acc1-01dda9a09242",
      "condition_type": "all",
      "enabled": false,
      "position": 1,
      "destination": {
        "id": "d72bd01b-2735-4b1e-b358-e0efb65669cf",
        "target_type": "EscalationPolicy",
        "target_id": "d471eb59-b2c2-4804-a455-908d2de800cc",
        "created_at": "2025-10-08T04:32:59.459-07:00",
        "updated_at": "2025-10-08T04:32:59.459-07:00"
      },
      "created_at": "2025-10-08T04:32:59.402-07:00",
      "updated_at": "2025-10-08T04:32:59.402-07:00",
      "destinations": [
        {
          "id": "d72bd01b-2735-4b1e-b358-e0efb65669cf",
          "target_type": "EscalationPolicy",
          "target_id": "d471eb59-b2c2-4804-a455-908d2de800cc",
          "created_at": "2025-10-08T04:32:59.459-07:00",
          "updated_at": "2025-10-08T04:32:59.459-07:00"
        }
      ],
      "conditions": []
    },
    "relationships": {
      "owning_teams": {
        "data": [
          {
            "id": "d1d765d5-0a53-4050-aadd-05dc7108b113",
            "type": "groups"
          }
        ]
      }
    }
  }
}