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": "4f570a4e-6464-473a-8f9a-169441265cfd",
    "type": "on_call_shadows",
    "attributes": {
      "schedule_id": "69ca0317-c902-4f67-b74d-017fcb392c13",
      "shadowable_type": "User",
      "shadowable_id": "394",
      "shadow_user_id": 393,
      "starts_at": "2025-11-19T11:05:37.000-08:00",
      "ends_at": "2025-11-20T09:05:37.000-08:00",
      "created_at": "2025-11-19T09:05:37.954-08:00",
      "updated_at": "2025-11-19T09:05:37.954-08:00"
    }
  }
}