public function normalizeData(array $data): array
    {
        $normalizedMetaData = [];
        foreach ($data as $key => $value) {
            $normalizedKey = strtolower($key);
            $normalizedValue = $this->normalizeValues($normalizedKey, $value);
            $normalizedMetaData[$normalizedKey] = $normalizedValue;
        }

        return $normalizedMetaData;
    }