Singly profile returns extra characters

gistfile1.aw

<?php

namespace Singly\Model;

use Zend\Http\Client,
    Zend\Json\Json,
    Singly\Module;

class Singly {
    public function takelogin($code) {
        // Validate the access token
        $http = new Client();
        $http->setUri('https://api.singly.com/oauth/access_token');
        $http->setMethod('POST');

        $http->setParameterPost(array(
            'client_id' => Module::getOption('client_id'),
            'client_secret' => Module::getOption('client_secret'),
            'code' => $code
        ));

        $response = $http->send();

        if (!$response->isOk()) {
            die('Invalid auth token returned from server');
        }

        $json = Json::decode($response->getContent());
        $token = $json->access_token;

        // Fetch the user's profile
        $http = new Client();
        $http->setUri('https://api.singly.com/profiles');
        $http->setMethod('GET');

        $http->setParameterGet(array(
            'access_token' => $token
        ));

        $response = $http->send();
        $content = $response->getContent();
        print_r($content);die();

        $decoded = Json::decode($json);
        print_r($decoded);
    }
}