Extract dynamic http request headers from json and send it using invokehttp

[#1]

Hi

I have a JSON that includes a "headers" key.

All the keys and values in the "headers" value should be sent as an HTTP request header.

For example, I have this JSON.

{"menu": {
  "id": "file",
  "value": "File",
  "popup": {
    "menuitem": [
      {"value": "New", "onclick": "CreateNewDoc()"},
      {"value": "Open", "onclick": "OpenDoc()"},
      {"value": "Close", "onclick": "CloseDoc()"}
    ]
  },
  "headers": {"Accept-Charset": "utf-8",
              "Accept-Language": "en-US",
               "N_header_key":"n_header_val"}
}}

I want to send all the values of "headers" as HTTP request headers using invokeHTTP. 

Is there any way to send the headers dynamically?