JOLT 在 struct 体中间添加一个 JSON 字段

我try 在JSON struct 中附加一个新的字段，我需要它放在一个确定的位置，在数组之前，但规范在最后定位该字段. 这是我的JSON原创和Jolt Transform Web中编写的转换代码:

INPUT:

{
  "Id": ">COS",
  "equipment": "ALA",
  "elementId": "M15463",
  "zone": "AMBA",
  "hub": "AVA",
  "terminalServer": "XS0156",
  "Area": "null",
  "timestamp": "1576155950000",
  "collectedData": [
    {
      "name": "llljljiouohh",
      "instance": "X1.M1.YE9.ON18",
      "value": "5",
      "unit": "db"
    }
  ]
}

JSON spec:个

[
  {
    "operation": "default",
    "spec": {
      "timestamp_dt": "2022-10-14 15:00"
    }
  }
]

** 结果:**

{
  "Id": ">COS",
  "equipment": "ALA",
  "elementId": "M15463",
  "zone": "AMBA",
  "hub": "AVA",
  "terminalServer": "XS0156",
  "Area": "null",
  "timestamp": "1576155950000",
  "collectedData": [
    {
      "name": "llljljiouohh",
      "instance": "X1.M1.YE9.ON18",
      "value": "5",
      "unit": "db"
    }
  ],
  "timestamp_dt": "2022-10-14 15:00"
}

Expected:

{
  "Id": ">COS",
  "equipment": "ALA",
  "elementId": "M15463",
  "zone": "AMBA",
  "hub": "AVA",
  "terminalServer": "XS0156",
  "Area": "null",
  "timestamp": "1576155950000",
  "timestamp_dt": "2022-10-14 15:00",
  "collectedData": [
    {
      "name": "llljljiouohh",
      "instance": "X1.M1.YE9.ON18",
      "value": "5",
      "unit": "db"
    }
  ]
}

有什么建议吗？谢谢!