Remove dynamic root from JSON

JsonWithDynamicRoot.json

{
  "dynamicRootName": [
    {
      "id": "testId1",
      "message": "testMessage1"
    },
    {
      "id": "testId2",
      "message": "testMessage2"
    }
  ]
}

JsonWithoutDynamicRoot.json

[
  {
    "id": "testId1",
    "message": "testMessage1"
  },
  {
    "id": "testId2",
    "message": "testMessage2"
  }
]

RemoveJsonRootMethod.cs

public string RemoveJsonRoot(string jsonString)
{
    StringBuilder sb = new StringBuilder();
    using (JsonTextReader reader = new JsonTextReader(new StringReader(jsonString)))
    {
        JObject jObject = JObject.Load(reader);
        var rootContent = jObject.First.Children<JToken>();
        foreach (var r in rootContent)
        {
            sb.Append(r.ToString());
        }
        return sb.ToString();
    }
}