Retrieves an alert routing rule

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

{
  "data": {
    "id": "76673763-70c5-4e09-b861-e8280c71c84b",
    "type": "alert_routing_rules",
    "attributes": {
      "name": "Alert Routing Rule 2",
      "alerts_source_id": "8758216e-f9a6-4d7e-9369-9f47e160908e",
      "condition_type": "all",
      "enabled": false,
      "position": 1,
      "destination": {
        "id": "9ee2c086-e03f-4cd8-8fb5-f452f1352168",
        "target_type": "EscalationPolicy",
        "target_id": "40325ed2-2f6c-4c57-a147-c39f5aa8fe74",
        "created_at": "2025-09-17T17:43:21.850-07:00",
        "updated_at": "2025-09-17T17:43:21.850-07:00"
      },
      "created_at": "2025-09-17T17:43:21.755-07:00",
      "updated_at": "2025-09-17T17:43:21.755-07:00",
      "destinations": [
        {
          "id": "9ee2c086-e03f-4cd8-8fb5-f452f1352168",
          "target_type": "EscalationPolicy",
          "target_id": "40325ed2-2f6c-4c57-a147-c39f5aa8fe74",
          "created_at": "2025-09-17T17:43:21.850-07:00",
          "updated_at": "2025-09-17T17:43:21.850-07:00"
        }
      ],
      "conditions": []
    },
    "relationships": {
      "owning_teams": {
        "data": [
          {
            "id": "5227c048-71ac-4580-9849-1bcc5d9abb1a",
            "type": "groups"
          }
        ]
      }
    }
  }
}