CakeCategoryCityVo

{
    "cityId": 1872886836146016300,
    "cityName": "杭州市",
    "cityLetter": "string",
    "cityParentId": 0,
    "cityCode": "string",
    "cityExtra": {
        "cityArea": [
            {
                "id": "string",
                "name": "string"
            }
        ]
    }
}