Retrieves an alert routing rule

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

{
  "data": {
    "id": "d5811429-1598-4d93-ac09-48dbbc6cc217",
    "type": "alert_routing_rules",
    "attributes": {
      "name": "Alert Routing Rule 10",
      "alerts_source_id": "463f6bd9-8448-4c7d-a190-38f23eac0e00",
      "condition_type": "all",
      "enabled": false,
      "position": 1,
      "destination": {
        "target_type": "EscalationPolicy",
        "target_id": "3e0ac731-973e-4dcb-a300-9982684b711a"
      },
      "created_at": "2026-02-17T05:45:02.467-08:00",
      "updated_at": "2026-02-17T05:45:02.467-08:00",
      "destinations": [
        {
          "target_type": "EscalationPolicy",
          "target_id": "3e0ac731-973e-4dcb-a300-9982684b711a"
        }
      ],
      "conditions": []
    },
    "relationships": {
      "owning_teams": {
        "data": [
          {
            "id": "ec05627b-d148-462b-b24a-9f0696b29382",
            "type": "groups"
          }
        ]
      }
    }
  }
}