Retrieves an alert routing rule

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

{
  "data": {
    "id": "14dc9ba9-14f7-4e35-9311-9d00778da622",
    "type": "alert_routing_rules",
    "attributes": {
      "name": "Alert Routing Rule 2",
      "alerts_source_id": "1d2d44da-a063-4baa-b91b-9dc2957b5525",
      "condition_type": "all",
      "enabled": false,
      "position": 1,
      "destination": {
        "id": "99be857b-7570-479e-8044-4b7df410cdec",
        "target_type": "EscalationPolicy",
        "target_id": "6eae9d5c-4881-4a45-9e50-760b32490c38",
        "created_at": "2025-09-03T02:17:56.568-07:00",
        "updated_at": "2025-09-03T02:17:56.568-07:00"
      },
      "created_at": "2025-09-03T02:17:56.503-07:00",
      "updated_at": "2025-09-03T02:17:56.503-07:00",
      "destinations": [
        {
          "id": "99be857b-7570-479e-8044-4b7df410cdec",
          "target_type": "EscalationPolicy",
          "target_id": "6eae9d5c-4881-4a45-9e50-760b32490c38",
          "created_at": "2025-09-03T02:17:56.568-07:00",
          "updated_at": "2025-09-03T02:17:56.568-07:00"
        }
      ],
      "conditions": []
    },
    "relationships": {
      "owning_teams": {
        "data": [
          {
            "id": "fc4340d7-f7d8-4773-b2be-1abc025d3e77",
            "type": "groups"
          }
        ]
      }
    }
  }
}