Retrieves an alert routing rule

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

{
  "data": {
    "id": "a5de2c73-cebb-4672-a74c-687bd1fd1c8e",
    "type": "alert_routing_rules",
    "attributes": {
      "name": "Alert Routing Rule 10",
      "alerts_source_id": "ab3bd8fb-4a3c-4ad1-bc06-408c9074d40f",
      "condition_type": "all",
      "enabled": false,
      "position": 1,
      "destination": {
        "target_type": "EscalationPolicy",
        "target_id": "7fc525c1-37fa-44c3-898c-26513962e7e2"
      },
      "created_at": "2026-02-23T06:09:58.721-08:00",
      "updated_at": "2026-02-23T06:09:58.721-08:00",
      "destinations": [
        {
          "target_type": "EscalationPolicy",
          "target_id": "7fc525c1-37fa-44c3-898c-26513962e7e2"
        }
      ],
      "conditions": []
    },
    "relationships": {
      "owning_teams": {
        "data": [
          {
            "id": "9cedc9eb-ad5a-4935-b34f-0e829deeb62b",
            "type": "groups"
          }
        ]
      }
    }
  }
}