请问我这样的json字符串要如何插入在chart表中,新手

需要的数据只有time upnet downnet
好像识别得有点问题,
求求求!!!

  <script type="text/javascript">
        var chart = null; // 定义全局变量
        $(document).ready(function () {
            chart = Highcharts.chart('container', {
                chart: {
                    type: 'spline',
                    events: {
                        load: requestData // 图表加载完毕后执行的回调函数
                    }
                },
                title: {
                    text: 'Live random data'
                },
                xAxis: {
                    type: 'time',
                    tickPixelInterval: 150,
                    maxZoom: 20 * 1000
                },
                yAxis: {
                    minPadding: 0.2,
                    maxPadding: 0.2,
                    title: {
                        text: 'Value',
                        margin: 80
                    }
                },
                series: [{
                    name: 'net',
                    data: []
                }]
            });
        });

        String.prototype.TimeFormat = function () {
            var jsondate = this;
            jsondate = jsondate.replace("/Date(", "").replace(")/", "");
            if (jsondate.indexOf("+") > 0) {
                jsondate = jsondate.substring(0, jsondate.indexOf("+"));
            }
            else if (jsondate.indexOf("-") > 0) {
                jsondate = jsondate.substring(0, jsondate.indexOf("-"));
            }

            var date = new Date(parseInt(jsondate, 10));
            var month = date.getMonth() + 1 < 10 ? "0" + (date.getMonth() + 1) : date.getMonth() + 1;
            var currentDate = date.getDate() < 10 ? "0" + date.getDate() : date.getDate();
            var hour = date.getHours() < 10 ? "0" + date.getHours() : date.getHours();
            var minute = date.getMinutes() < 10 ? "0" + date.getMinutes() : date.getMinutes();
            var second = date.getSeconds() < 10 ? "0" + date.getSeconds() : date.getSeconds();
            return date.getFullYear() + "-" + month + "-" + currentDate + " " + hour + ":" + minute + ":" + second;
        }

        function requestData() {
            $.ajax({
                url: '/Dashboard/Sysinfo',
                type:"post",
                success: function (data) {
                    var we = data;
                    for (var i = 0; i < data.length; i++) {
                        we[i].time = we[i].time.TimeFormat();
                        we[i].upnet = we[i].upnet;
                        we[i].downnet = we[i].downnet;
                    }
                    console.log(we)

                    var series = chart.series[0],
                        shift = series.data.length > 20; // 当数据点数量超过 20 个,则指定删除第一个点

                    // 新增点操作
                    //具体的参数详见:https://api.hcharts.cn/highcharts#Series.addPoint
                    chart.series[0].addPoint(we, true, shift);

                    // 一秒后继续调用本函数
                    setTimeout(requestData, 1000);
                },
                cache: false
            });
        }
    </script>

其中time原本的数据是"/Date(1624423848297)/"这样的类型,被我转成了正常的时间类型