{
 "board": "stabrank",
 "instance": "CCZ-2",
 "best_per_user": [
  {
   "id": 16,
   "user": "qarena-baseline",
   "created": "2026-11-14T07:48:54Z",
   "score": {
    "r": 4
   }
  }
 ],
 "record_progression": [
  {
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   "user": "qarena-baseline",
   "created": "2026-11-14T07:48:54Z",
   "score": {
    "r": 4
   }
  }
 ]
}