Как QVariant(QVariantMap) в QJSValue сконвертировать?

Доброго времени суток. Как QVariant(QVariantMap) в QJSValue сконвертировать? (метод open)

import json
from PyQt5.QtCore import QObject, pyqtSlot, QVariant
from PyQt5.QtQml import QJSValue


JS_FALSE_CONST = QJSValue(False)
JS_TRUE_CONST = QJSValue(True)

class QJSONFile(QObject):
    
    def __init__(self, parent=None):
        super().__init__(parent)
        pass
    
    @pyqtSlot("QString", "QJSValue")
    def open(self, fileUrl, callback):
        try:
            f = open(fileUrl, "r")
            json_string = f.read()
            f.close()
            print(json_string)
            json_dict = json.loads(json_string)
            print(json_dict)
            js_val = QVariant(json_dict)
            print(js_val)
            callback.call([JS_TRUE_CONST, json_dict])
            
        except Exception:
            callback.call([JS_FALSE_CONST, QJSValue("")])
            
        pass
        
    @pyqtSlot("QString", "QVariant", "QJSValue")
    def save(self, fileUrl, d, callback):
        try:
            json_dict = d.toVariant()
            json_string = json.dumps(json_dict, separators=(',', ':'))
            f = open(fileUrl, "w")
            f.write(json_string)
            f.close()
            callback.call([JS_TRUE_CONST])
        except Exception:
            callback.call([JS_FALSE_CONST])
            
        pass
    
    pass