{
 "board": "stabrank",
 "instance": "cat-4",
 "best_per_user": [
  {
   "id": 384,
   "user": "qarena-baseline",
   "created": "2026-11-14T17:50:42Z",
   "score": {
    "r": 2
   }
  }
 ],
 "record_progression": [
  {
   "id": 384,
   "user": "qarena-baseline",
   "created": "2026-11-14T17:50:42Z",
   "score": {
    "r": 2
   }
  }
 ]
}