protected function getSuccessData($attributes = null)
    {
        $rawData = $this->decodeResponseJson()['data'];

        if (is_null($attributes)) {
            return $rawData;
        } elseif (is_string($attributes)) {
            return array_get($rawData, $attributes);
        }

        $data = [];

        foreach ($attributes as $attribute) {
            $data[] = array_get($rawData, $attribute);
        }

        return $data;
    }