Get an alert route

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

{
  "data": {
    "id": "479ad70c-5011-4a92-8102-bed1d4039664",
    "type": "alert_routes",
    "attributes": {
      "name": "Test Alert Route-8a2c",
      "enabled": true,
      "created_at": "2026-02-07T16:44:28.228-08:00",
      "updated_at": "2026-02-07T16:44:28.228-08:00",
      "alerts_source_ids": [],
      "owning_team_ids": [],
      "rules": []
    }
  }
}