private function doGetRequest($url)
    {
        $response = $this->client->request('GET', $url, [
            'headers' => [
                'Authorization' => 'JWT '.$this->token,
            ],
        ]);

        $data = false;

        if ($response->getStatusCode() == 200) {
            $data = json_decode($response->getBody(), true);
        }

        return $data;
    }