This sample script is for using Binance API by Google Apps Script. This script encryptes "signature" like samples. In this script, "Example 1: As a query string" is used, and it retrieves "All orders (SIGNED)" by "GET".
function main() {
var key = '#####'; // Please input your key.
var secret = '#####'; // Please input your secret.
var api = "/api/v3/allOrders"; // Please input API Endpoint you want.
var timestamp = Number(new Date().getTime()).toFixed(0);
var string = "symbol=LTCBTC&timestamp=" + timestamp; // Please input query parameters for the inputterd API.