public function b2AuthorizeAccount()
    {
        $curl = $this->prepareCurl();
        $browser = new Browser($curl);
        $response = $browser->get($this->url.'b2_authorize_account', array(
            'Accept' => 'application/json',
            'Content-type' => 'application/json',
            'Authorization' => 'Basic '.$this->credentials,
        ));

        return new B2Response($response);
    }