signatures.js

var fs = require('fs');
var obj = require('./signatures.json');

function forEach(obj, fn, path) {
    if (obj && typeof obj == "object")
        Object.keys(obj).forEach(function(key) {
            var deepPath = path ? path + '.' + key : key;
            // Note that we always use obj[key] because it might be mutated by forEach
            if (fn.call(obj, obj[key], key, obj, deepPath))
                forEach(obj[key], fn, deepPath);
        })
}

var table = [];
forEach(obj, function(thing, key, obj, path) {

    var thingy;

    if (thing.email) {
        thingy = {
            "include_vars": thing
        }
        thingy.timestamp = thing.timestamp
        table.push(thingy)
        return false
    } else {
        return true
    }
});
fs.writeFile("signatures.json", JSON.stringify(table), "UTF-8", function(a) {
    a && console.log(a)
})