public function extractData(Request $request)
    {
        $data = $request->data();
        $entityData = array();
        $inputName = $this->getInputName();

        if (!array_key_exists($inputName, $data)) {
            return array();
        }

        $entityData = $data[$inputName];
        $filteredData = array();

        foreach ($this->getAttributeNames() as $key) {
            if (array_key_exists($key, $entityData)) {
                $filteredData[$key] = $entityData[$key];
            }
        }

        return $filteredData;
    }