How do I decode YouTube video signature with this base.js url
in php
I want to parse this signature with this JavaScript in PHP
https://s.ytimg.com/yts/jsbin/player-en_US-vflF6iOW5/base.js
1. Original signature
558D58CA687B9BD6B4C7E22FDB1C07395679C758489.0203EF29F3E3BD1E7A32567C9F02FE09035C837676
2 .after Parse out put decode signature
858CA687B95D6B4C7E22FDB1C07395679C75D489.0203EF29F3E3BD1E7A32567C9F02FE09035C738
how do I parse this signature with JS in PHP and get 2nd decode signature