Android Volley POST - 正文中的 JSON 编码

我正在使用 Volley Android 将一些数据发布到 Restful Api 端点，使用邮递员可以很好地处理身体数据raw，application/json例如：

{
    "operation": "someaction",
    "key": "pk_test_fssdfsdfjkhkjsdhf84334",
    "token": "tk_test_432332sdxxaJJJJHHHshhsas",
    "ssids":[[{
        "mac":"34:15:13:d4:59:f1" //<--this is important here, it's mac addr
            }]] //<-- yup, with double double [[ ... ]]
}

它使用 POSTMAN 工作并返回

当我在下面的代码中使用 volley 时，问题就开始了：

public void getBleeCardData(Response.Listener<String> response, final String ssidsdata, final ProgressDialog pd)throws JSONException {

    String url = "https://www......com/api/something.do";

    JSONObject jsonBody = new JSONObject();
               jsonBody.put("operation", "something");
               jsonBody.put("key", "pk_try_oqiwFHFKjkj4XMrh");
               jsonBody.put("token", "tk_tkn_erwweelWgH4olfk2");
               jsonBody.put("ssids", ssidsdata.toLowerCase()); 

    final String mRequestBody = jsonBody.toString();

    RequestQueue queue = Volley.newRequestQueue(context);
    StringRequest postRequest = new StringRequest(Request.Method.POST, url,new Response.Listener<String>() {

                @Override
                public void onResponse(String response) {
                    Log.d("Response", response);
                }
            },
            new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    Log.d("ERROR", "error => " + error.toString());
                }
            }
    ) {
        @Override
        public byte[] getBody() throws AuthFailureError {
            try {
                return mRequestBody == null ? null : mRequestBody.getBytes("utf-8");
            } catch (UnsupportedEncodingException uee) {
                VolleyLog.wtf("Unsupported Encoding while trying to get the bytes of %s using %s", mRequestBody, "utf-8");
                return null;
            }
        }

        @Override
        public String getBodyContentType() {
            return "application/x-www-form-urlencoded; charset=UTF-8";
        }
    };
    queue.add(postRequest.setRetryPolicy(new DefaultRetryPolicy(30000,
            DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
            DefaultRetryPolicy.DEFAULT_BACKOFF_MULT))); }

我需要编码方面的帮助，使用 Volley 发送的数据如下：

{"操作":"dataMachines","key":"pk_test_6pRNAHGGoqiwFHFKjkj4XMrh","token":"tk_test_ZQokik736473jklWgH4olfk2","ssids":"[[{\"mac\"5:\"59d1: :f1\"}]]"}

为什么像"ssids":"[[{\"mac\":\"34:15:13:d4:59:f1\"}]]"}这样发送这个节点？，怎么样"\"，一些特殊的编码来删除它？

是否可以更改编码以防止这些"\"？