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": "3af65af6-5f48-4954-afec-75f709aa0b32",
    "type": "on_call_shadows",
    "attributes": {
      "schedule_id": "57f836d8-e43b-452c-8145-51c90daa5a4e",
      "shadowable_type": "User",
      "shadowable_id": "745",
      "shadow_user_id": 744,
      "starts_at": "2026-01-24T00:59:15.000-08:00",
      "ends_at": "2026-01-24T22:59:15.000-08:00",
      "created_at": "2026-01-23T22:59:15.933-08:00",
      "updated_at": "2026-01-23T22:59:15.933-08:00"
    }
  }
}