title: how can I get value from json object in groovy
body: <pre><code>def RawRecordsDateRangeResponse = context.expand('${getRawRecordsForDateRange#Response}')   
      log.info RawRecordsDateRangeResponse
  </code></pre>
  
  <p>My response is:</p>
  
  <pre><code>{"2018-09-03":"https://dhap-dconnect-telemetry-data-dev2.s3.amazonaws.com/ULT/d83350d2-af56-11e8-b612-0242ac11001118/temperature/raw-2018-09-03.json"}
  </code></pre>
  
  <p>Here I want to get the value from the json response key as date.</p>