Retrieves an On Call Shadow configuration by ID

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

{
  "data": {
    "id": "cc7e1fc2-6787-4f74-9eec-5e451c3419a5",
    "type": "on_call_shadows",
    "attributes": {
      "schedule_id": "2897bf80-972e-45e6-9da0-8d050c80fed8",
      "shadowable_type": "User",
      "shadowable_id": "333",
      "shadow_user_id": 332,
      "starts_at": "2025-04-18T20:21:38.000-07:00",
      "ends_at": "2025-04-19T18:21:38.000-07:00",
      "created_at": "2025-04-18T18:21:38.319-07:00",
      "updated_at": "2025-04-18T18:21:38.319-07:00"
    }
  }
}