Chain switch Unity WebGL

Greetings. How could I change user chain programatically, if that not fit for me.
Like: My app works only with Polygon chain (137) and user trying to auth with any other chain.
How could I change his network?

Here is pretty seems realisation, but I need something related with Unity

if you use wallet connect then I don’t know if there is a way to change the chain, there should be a way to specify the chain at the connection time