I have configured whats-app with odoo and i get the response if someone sent message to odoo, the API response will get through a controller of type=json; I need to showcase one notification to the user in the browser, if user is logged in;
I tried in python side like 

def sticky_notification(self, senderName):
    return {
        'type': 'ir.actions.client',
        'tag': 'display_notification',
        'params': {
            'type': 'success',
            'title': _("Whatsapp"),
            'message': 'You have one message from ' + senderName,
            'sticky': True,
        }
    }

but its not working 
so, how can we trigger one JS function once the response get;
Or is there any other way to solve this.

Thanks