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": "afe2d69b-8f7c-4312-9a62-6d44836487f8",
    "type": "on_call_shadows",
    "attributes": {
      "schedule_id": "3a3738d2-f0a9-459d-a815-d9dcb151f6ac",
      "shadowable_type": "User",
      "shadowable_id": "359",
      "shadow_user_id": 358,
      "starts_at": "2025-09-13T22:31:06.000-07:00",
      "ends_at": "2025-09-14T20:31:06.000-07:00",
      "created_at": "2025-09-13T20:31:06.813-07:00",
      "updated_at": "2025-09-13T20:31:06.813-07:00"
    }
  }
}