title: I want to pass JSON data from javascript to Native iOS module in React Native
body: <p>I am now developing some Native UI Component in React Native.
  I have no problem with passing simple data (basic data) from Javascript to Native iOS Module but I have some difficult problem with passing json data to native IOS module.</p>
  
  <p>there is sample on React Native Community reference but I can't not understand enough.</p>
  
  <p>for example, I want to pass the data like this.</p>
  
  <pre><code>data = {
  session: "aaa",
  token: "bbb",
  security: "cccc"
  };
  </code></pre>
  
  <p>all the data will be passed at the same time so I want pass this JSON data to Native iOS module .</p>