code: function(data) {
        var headers = {
          email: data.email,
          password: data.password,
          contentType: 'audio/wav'
        };
  
        var body = data.wav;
  
        return client.request('POST', 'enrollments', headers, body);
      }
docs: Create enrollment
  
  @param  {Array} data
  @return {Promise}