{
  "labels": [
    "person",
    "car",
    "tree"
  ],
  "matrix": [
    [
      48,
      3,
      1
    ],
    [
      4,
      51,
      2
    ],
    [
      2,
      1,
      44
    ]
  ],
  "layout": "rows=actual, cols=predicted"
}