public function payments($payload) {
        return $this->sendRequest(
            function () use ($payload) {
                $query = http_build_query($payload);
                $uri = Constants::API_VERSION_ROUTE . '?' . $query;
                return $this->guzzle->get($uri, [
                    'headers' => $this->getRequestAuthHeaders(Constants::API_VERSION_ROUTE, $query),
                ]);
            }
        );
    }