我有一个以大括号“ {}”开头和结尾的JSON字符串。

然后，我反序列化该对象，但是完成此操作后，我发现我现在在开头和结尾的“ {{}}”处都有两个大括号。

我的代码看起来像这样

    //deserializeobject json string into jobject
        JObject loanVersionedDoc = JsonConvert.DeserializeObject<JObject>(s);

    //Get the latest value from versioned document

        JObject loanLatestVersion = Versioning.demultiplicifyingParseForLatest(loanVersionedDoc);

    //TODO get the latest activity.isComplete value

        string activityCompletionStatus = (string)loanVersionedDoc.GetValue("Activities[0].isComplete");

这就是我的JSON字符串的样子

"{ \"_id\" : \"582c459d54b6e43d307929f8\", \"LoanName\" :
...
 }

这就是我的loanVersionedDoc的样子

{{
  "LoanName": "Test One",
  "isActive": "True",
  "Stages": [
    {
      "StageName": "Stage One",
      "isComplete": false
    },
    {
      "StageName": "Stage Two - CAG Approval and Indicative Terms",
      "isComplete": true
    },
    {
      "StageName": "Stage Three",
      "isComplete": false
    }
  ],
  "Activities": [
    {
      "ActivityName": "Generate due diligence report",
      "isComplete": "Complete",
      "ActivityParent": "Stage Two - CAG Approval and Indicative Terms"
    },
    {
      "ActivityName": "Received Stage 2 document from BDM",
      "isComplete": "NA",
      "ActivityParent": "Stage Two - CAG Approval and Indicative Terms"
    },
...
}}

在反序列化时，导致JObject继承一个额外的花括号，我必须做错什么？