Hassio + MQTT + Smartthings

I am trying to setup Hassio and Smartthings using MQTT, I am very new to all of this, I have two switches in Hassio from Smartthings but they do not do anything.

I looked in Smartthings App and the Activity Feed and can see Smartthings is sending device notifications to MQTT Bridge. Where can i look on the MQTT side to see if there is a problem ? Where else can I troubleshoot to figure out why nothing is working.

Thanks

Install MQTTfx and subscribe to the topic you want to see.