title: Store multiple values in single key in json
body: <p>I need to store many values in single key of json. e.g.</p>
  
  <pre><code>{
    "number" : "1","2","3",
    "alphabet" : "a", "b", "c"
  }
  </code></pre>
  
  <p>Something like this. Any pointers?</p>