Express Error when trying to add a file

I have

var users1 = require('./users');

when I am trying to compile a file with this line : I am getting the Error:

undefined:2
    �tobi�: {
    ^

    SyntaxError: Unexpected token �
        at Object.parse (native)
        at Object..json (module.js:471:25)
        at Module.load (module.js:353:31)
        at Function._load (module.js:311:12)
        at Module.require (module.js:359:17)
        at require (module.js:375:17)
        at Object.<anonymous> (C:\node\XXXXXXX)
        at Module._compile (module.js:446:26)
        at Object..js (module.js:464:10)
        at Module.load (module.js:353:31)

I am really not getting what is the issuw with that line. It is a file names users.jason with json bodies

the content of the user.json is :

{
    “tobi”: {
        “password”: “xxxxxx”
    }
}

should it be .json (or) json?