Always failed with 'crypto/rsa: verification error'

[chengkun-kang]

Same steps, but always failed with 'crypto/rsa: verification error'.

[chengkun-kang]

jwt.io return signature verification failed by follow doc: https://blogs.aaddevsup.xyz/2019/03/using-jwt-io-to-verify-the-signature-of-a-jwt-token/