Now user can use MQTT Client option to establish a MQTT connection and to perform pubsub operations. Go to Command section from left menu of dashboard and choose MQTT Client.
Here user need to enter same Client ID, Username and Password used while adding a device.
User can subscribe to a topic which he has mentioned while adding device to account.
User can publish to a topic which he has mentioned while adding device to account.
User can see the list of Message already sent and Messages Received in their respective tables as above.