[
  {
    "frame_idx": 0,
    "class": "multiaxle",
    "bbox": [
      10.108301162719727,
      0.0,
      560.2083129882812,
      656.33837890625
    ],
    "score": 0.40238434076309204,
    "track_id": "f0-d0"
  }
]