$ grep -v '^#' /etc/passwd | head -n 2 | \
  mlr --nidx --fs : --ojson --jvstack --jlistwrap label name,password,uid,gid,gecos,home_dir,shell
[
{
  "name": "nobody",
  "password": "*",
  "uid": -2,
  "gid": -2,
  "gecos": "Unprivileged User",
  "home_dir": "/var/empty",
  "shell": "/usr/bin/false"
}
,{
  "name": "root",
  "password": "*",
  "uid": 0,
  "gid": 0,
  "gecos": "System Administrator",
  "home_dir": "/var/root",
  "shell": "/bin/sh"
}
]