I don't think it is possible out of the box.
https://documentation.meraki.com/General_Administration/Cross-Platform_Content/Alerts_and_Notificati...
You can only set up an alert for a client ( no specific vlan tho ) , but the network needs a MX.
In last resort you could do a script with the API that checks the network clients and if the client is seen on 'X' vlan , do 'Y'
