Retrieves an alert routing rule

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

{
  "data": {
    "id": "8d9caf1c-4a5d-4355-9618-ab16d806fb69",
    "type": "alert_routing_rules",
    "attributes": {
      "name": "Alert Routing Rule 1",
      "alerts_source_id": "060073d9-83d9-403e-a4d1-2a72cc2d7915",
      "condition_type": "all",
      "enabled": false,
      "position": 1,
      "created_at": "2025-07-17T10:59:13.772-07:00",
      "updated_at": "2025-07-17T10:59:13.772-07:00",
      "destinations": [
        {
          "id": "40961a6b-a801-448d-9ad9-865d10ccdd1c",
          "target_type": "EscalationPolicy",
          "target_id": "7d5f5f31-b4a4-494c-9c7a-472208ebab56",
          "created_at": "2025-07-17T10:59:13.849-07:00",
          "updated_at": "2025-07-17T10:59:13.849-07:00"
        }
      ],
      "conditions": []
    },
    "relationships": {
      "owning_teams": {
        "data": [
          {
            "id": "ae4fe25d-069d-4724-b1a7-38994c052829",
            "type": "groups"
          }
        ]
      }
    }
  }
}