With Inherited Widget

with_inherited_widget.dart

class MyInheritedWidget extends InheritedWidget {
  final int accountId;
  final int scopeId;

  MyInheritedWidget(accountId, scopeId, child): super(child);
  
  @override
  bool updateShouldNotify(MyInheritedWidget old) =>
    accountId != old.accountId || scopeId != old.scopeId;
}

class MyPage extends StatelessWidget {
  final int accountId;
  final int scopeId;
  
  MyPage(this.accountId, this.scopeId);
  
  Widget build(BuildContext context) {
    return new MyInheritedWidget(
      accountId,
      scopeId,
      const MyWidget(),
     );
  }
}

class MyWidget extends StatelessWidget {

  const MyWidget();
  
  Widget build(BuildContext context) {
    // somewhere down the line
    const MyOtherWidget();
    ...
  }
}

class MyOtherWidget extends StatelessWidget {

  const MyOtherWidget();
  
  Widget build(BuildContext context) {
    final myInheritedWidget = MyInheritedWidget.of(context);
    print(myInheritedWidget.scopeId);
    print(myInheritedWidget.accountId);
    ...