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": "f8f34f28-eb89-4f71-bd87-4b71013f1491",
    "type": "on_call_shadows",
    "attributes": {
      "schedule_id": "eb887cb7-8d95-49e1-bd51-093a60582642",
      "shadowable_type": "User",
      "shadowable_id": "902",
      "shadow_user_id": 901,
      "starts_at": "2026-02-13T20:09:05.000-08:00",
      "ends_at": "2026-02-14T18:09:05.000-08:00",
      "created_at": "2026-02-13T18:09:05.573-08:00",
      "updated_at": "2026-02-13T18:09:05.573-08:00"
    }
  }
}