从JSON数据中的键创建数组

Question

我需要从JSON数据中的Keys列表创建一个数组。目前的数据如下：

    {
"Investment": [
    {
        "name": "Average",
        "value": "170.0"
    }
],
"Recordkeeping Administration": [
    {
        "name": "Average",
        "value": "88.0"
    }
],
"Total Bundled": [
    {
        "name": "Average",
        "value": "268.0"
    }
],
"Trustee": [
    {
        "name": "Average",
        "value": "10.0"
    }
],
"chart_type": [
    {
        "name": "column",
        "value": "column"
    }
]

} 我需要一个如下所示的数组：[“投资”，“记录管理”，“总捆绑”，“受托人”]