title: Get key from hashMap in React-Native
body: <p>I have a hashMap as response from server that looks like this : </p>
  
  <pre><code>"data": {
          "1549969678424": "26.092242876805436"
      }`
  </code></pre>
  
  <p>How can I take the key and the value from it in two separate variables?</p>