$ cat jwt.js
var jwt = require('jsonwebtoken');
var token = jwt.sign({
    "data": "my value",
    "permissions": [
        1,
        2,
        3,
        4,
        5,
        6,
        7,
        8,
        9,
        10
    ],
  }, 'secret_file', {expiresIn: "365 days"});

console.log(token)

$ node jwt.js
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJnZyI6Im5vbm9ubyIsInBlcm1pc3Npb25zIjpbMSwyLDMsNCw1LDYsNyw4LDksMTBdLCJpYXQiOjE2OTY5OTM1NjksImV4cCI6MTcyODUyOTU2OX0.b-5UiuaNdFPuwgJMn8Ji3v803OA00qA8aSwetY7XDEY