{
    "success": true,
    "parts": [
      { "label": "wheel", "x1": 110.2, "y1": 420.0, "x2": 230.8, "y2": 560.2, "confidence": 0.91 },
      { "label": "headlight", "x1": 640.2, "y1": 312.4, "x2": 730.8, "y2": 380.6, "confidence": 0.86 }
    ]
  }