Retrieves an alert routing rule

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

{
  "data": {
    "id": "ba389bbc-4f8c-4930-855e-c7c7f809ce01",
    "type": "alert_routing_rules",
    "attributes": {
      "name": "Alert Routing Rule 10",
      "alerts_source_id": "17d34d9f-d1dc-40dd-ba5a-576bd61cd8b2",
      "condition_type": "all",
      "enabled": false,
      "position": 1,
      "destination": {
        "target_type": "EscalationPolicy",
        "target_id": "154035a7-ecff-4a1b-8474-c352ee0d50ee"
      },
      "created_at": "2026-02-17T13:30:59.855-08:00",
      "updated_at": "2026-02-17T13:30:59.855-08:00",
      "destinations": [
        {
          "target_type": "EscalationPolicy",
          "target_id": "154035a7-ecff-4a1b-8474-c352ee0d50ee"
        }
      ],
      "conditions": []
    },
    "relationships": {
      "owning_teams": {
        "data": [
          {
            "id": "24078f79-e4fd-438f-b011-45c0f0b173ea",
            "type": "groups"
          }
        ]
      }
    }
  }
}