title: Why am I getting an Error Parsing JSON Response with this JSON?
body: <p>When making a POST request to the Spotify API using <a href="https://github.com/JMPerez/spotify-web-api-js" rel="nofollow noreferrer">https://github.com/JMPerez/spotify-web-api-js</a> I keep getting back a 400 bad request with the response "Error Parsing JSON'</p>
  
  <p>The JSON from the request headers looks valid to me.</p>
  
  <pre><code>{"uris":"spotify:track:5qmq61DAAOUaW8AUo8xKhh"}
  
  
  const addTrackToPlaylist = (track) =&gt; {
      spotifyApi.addTracksToPlaylist('4EiIrcKLn4P7xdHOj6tZ9Y', `spotify:track:${track}`)
      .then( (data) =&gt; {
          console.log(data);
      });
  }
  </code></pre>
  
  <p>I should get back a 201 and not the 400.</p>