title: MQTT Data Formatting of JSON object
body: <p>I am receiving the following JSON string over MQTT and want to extract the float values only.</p>
  <p>The data in the str format, should I change the sending format over MQTT?</p>
  <p>'{&quot;data&quot;: [-0.0929368, 0.18385214, -0.0929368, 0.18385214, -0.0929368, 0.18385214, -0.0929368, 0.18287938, -0.0929368, 0.18287938, 0.07806691, 0.18287938, 0.17843866, 0.18287938, 0.28252788, 0.1848249, 0.37174721]}'</p>
  <p>I only want to deal with the float arrays, but not finding the way to get it from the str objects.</p>
  <p>Could someone help?</p>
  <p>Kind regards
  arun</p>