Use https://jwt.io/ to decode JWT  It also shows the var­i­ous parts. A JWT token has mul­ti­ple parts in base64, sep­a­rat­ed by a point character. Create JWT token Cre­ate PEM SSH key: openssl genrsa -out private.pem 2048 Cre­ate base64 from head­er and payload: $ echo -n '{"typ":"JWT","alg":"RS256","kid":"http://10.10.14.17/private.pem"}' | base64 -w0 | sed s/+/-/ | sed -E s/=+$// =>…