private static function getParamsToSign(
        array $params,
        array $ignoreParamKeys = [],
        int $currentLevel = 1,
        string $prefix = ''
    ): array
    {
        $paramsToSign = [];
        foreach ($params as $key => $value) {
            if ((in_array($key, $ignoreParamKeys) && $currentLevel == 1)) {
                continue;
            }
            $paramKey = ($prefix ? $prefix . ':' : '') . $key;
            if (is_array($value)) {
                if ($currentLevel >= self::MAXIMUM_RECURSION_DEPTH) {
                    $paramsToSign[$paramKey] = (string)$paramKey.':';
                } else {
                    $subArray = self::getParamsToSign($value, $ignoreParamKeys, $currentLevel + 1, $paramKey);
                    $paramsToSign = array_merge($paramsToSign, $subArray);
                }
            } else {
                if (is_bool($value)) {
                    $value = $value ? '1' : '0';
                } else {
                    $value = (string)$value;
                }
                $paramsToSign[$paramKey] = (string)$paramKey.':'.$value;
            }
        }
        if ($currentLevel == 1) {
            ksort($paramsToSign, SORT_NATURAL);
        }
        return $paramsToSign;
    }