How to csave public address of metamask in mysql database pulling directly from metamask

Could someone help me with a blockchain integration between metamask and an app made in node.js.

I’m developing a login in node.js where I need in the registration to save the public address of the metamask wallet for future logins just compare the address that is not saved in the mysql database and start the application, someone with blockchain experience could help me to do this in wappler?