HarmonyOS 关于解析key不固定json数据方法

参考下这个demo：

class test {
  code: string = ''
  data: testdata = new testdata();
}
class testdata {
  label: string = ''
}
@Component
@Entry
struct Index {
  jsonStr: string = '{"code": 200,"msg": "SUCCESS","status": true,"data": { "labelv": "null_0","langtype": "zh_CN","label": { "79531": "需要您的授权同意才能访问NFC,用于NFC功能，读取特定设备的NFC信息(读取展示到屏幕)","150286": "已在其他端处理","260256": "您没有给对方发送消息的权限，请联系管理人员" },"langid": 7 },"fail": false}'
  get() {
    let a: test = JSON.parse(this.jsonStr) as test
    let c: string = JSON.stringify(a.data.label)
    let jsonRecord: Map<string, string> = new Map(Object.entries(JSON.parse(c)))
  }
  build() {
    Text('asadasd').onClick(() => {
      this.get()
    })
  }
}