decode jwt token using base64 in node js code example

Example 1: jsonwebtoken

RSASHA256(
  base64UrlEncode(header) + "." +
  base64UrlEncode(payload),
  ,
  
)

Example 2: jsonwebtoken

jwt.sign({  exp: Math.floor(Date.now() / 1000) + (60 * 60),  data: 'foobar'}, 'secret');