title: How to convert JSON String to Map in Scala
body: <p>I am having JSON String passed from POST method of REST URL. I need to convert  json string to map of type Map</p>
  
  <p>JSON String looks like below</p>
  
  <pre><code>{"key_value": {"1":"1000","2":"2000"}}
  </code></pre>
  
  <p>How to convert into Map using scala.</p>