put https://api.quickblox.com/chat/Dialog//notifications.json
A user can turn on/off push notifications for offline messages in a dialog. The default value is ON.
By default, when a user is offline and other user sent a message to them, they receive a push notification. It is possible to disable this feature. Available only for dialogs type=2 (GROUP) and type=3 (PRIVATE).
Recipes
Update Notification Settings with API key
Open Recipe