How to subscribe to the topic using multimaster_fkie

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Hello there, I am working on the multimaster_fkie and I am able to do the master_discovery and the master_sync nodes in two different machines. I am facing an issue with subscribing to the topic from another ROS Master.
Note: when I run rostopic list in both laptops I am able to see the same topics showing. I Also tried to run rostopic echo from the computer that is not roning the topic to see if I can get anything but no luck and nothings appear in the terminal.