{
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        "version": "0.1",
        "description": "Exported by Swift_COCO",
        "contributor": "gaoyi",
        "url": "",
        "date_created": "2023-10-17T09:48:27"
    },
    "licenses": [
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        ...
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    "categories": [
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            "id": 2,
            "name": "cat",
            "supercategory": "animal"
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    ],
    "images": [
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            "license": 1,
            "file_name": "<filename0>.<ext>",
            "height": 480,
            "width": 640,
            "date_captured": null
        },
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    "annotations": [
        {
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            "bbox": [260, 177, 231, 199],
            "segmentation": [...],
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}