title: ElasticSearch Index/Insert with NEST fail
body: <p>I'm trying to insert some JSON data into elastic search for testing.</p>
  
  <p>here is the code:</p>
  
  <pre><code>    var node = new Uri("http://localhost:9200");
      var settings = new ConnectionSettings(node);        
      settings.DefaultIndex("FormId");
  
      var client = new ElasticClient(settings);
  
      var myJson = @"{ ""hello"" : ""world"" }";
      var response = client.Index(myJson, i =&gt; i.Index("FormId")
                          .Type("resp")
                          .Id((int)r.id)
                          .Refresh()
                          );
  </code></pre>
  
  <p>Nothing is inserted, and I get the following error from ES:
  {Invalid NEST response built from a unsuccesful low level call on PUT: /FormId/resp/1?refresh=true}</p>
  
  <p>I've tried to find some example on that but all use a predefined structure of data, instead I want to use JSON data, with unstructured data.</p>
  
  <p>The above error messsage is from NEST.
  Elastic replies (and write in the log) the following message:
  MapperParsingException[failed to parse]; nested- NotXContentException[Compressor detection can only be called on some xcontent bytes or compressed xcontent bytes];</p>
  
  <p>Failed to parse { ""hello"" : ""world"" } ????</p>