How can I get package names in js?

Question

JavaScript

Everyone knows the VK COINS service, it had a lot of bots and they worked on web sockets. There were also parodies of Vk coins, I would like to learn how to work with package names. Looking at the code of one of the bots under vk coins, I did not understand where they got T, C, etc. from. If that C - Click, T - Transfer of coins. But how to get this description if there are no bots under the fake yet.
As well as correctly composing what, the code should send an example C1 1323 0