in lib/rpc.js [84:94]
function normalize(params) {
var list = [];
var flated = flatParams(params);
var keys = Object.keys(flated).sort();
for (let i = 0; i < keys.length; i++) {
var key = keys[i];
var value = flated[key];
list.push([encode(key), encode(value)]); //push []
}
return list;
}