Map<String, Object> List<Map<String, Object>>

private List<Map<String, Object>> keyValue;
if(requestMap.get("keyValue") != null){
	List<Map<String, Object>> keyValue = (List<Map<String, Object>>) requestMap.get("keyValue");
	for(Map<String, Object> map : keyValue){
		for(Map.Entry<String, Object> entry: map.entrySet()){
			contents = contents.replace("["+entry.getKey()+"]",entry.getValue().toString());
		}
	}
}

    const obj = Object.fromEntries(map);


private Map<String, Object> keyValue;
if(requestMap.get("keyValue") != null) {
	Map<String, Object> keyValue = (Map<String, Object>) requestMap.get("keyValue");
	for(Map.Entry<String, Object> entry: keyValue.entrySet()){
		contents = contents.replace("["+entry.getKey()+"]",entry.getValue().toString());
	}
}