Finally, everyone likes to know their results.
S3zipper API provides the ability for users to start a background task that can wait till the results are finished. When there is a signal that the result is present, this task retrieves the result of the final request that just completed running. A lot of time it could be an actual result or just a notification that the result was successful.
Also available on Github

Example Below Using Go & Echo

package main

import (
	"github.com/labstack/echo"
	"net/http"
	"io/ioutil"
	"log"
	"strings"
	"github.com/labstack/echo-contrib/session"
)

func s3JwtResult(c echo.Context) (err error){
	/**************** GET TOKEN FROM COOKIE ***************************/
	cookie, err := c.Cookie("newJwtToken")
	if err != nil {
		return err
	}
	var bearer = "Bearer " + cookie.Value

	/**************** GET UUIDS FROM SESSION ***************************/
	sess, _ := session.Get("session", c)
	allBodyUUIDs := sess.Values["allBodyUUIDs"]
	/**************** ACCESS API WITH TOKEN  ***************************/
	client := &http.Client{}
	// create new request with allbody set
	//allbody contains uuids
	req2 , err2:= http.NewRequest("POST", "https://api.s3zipper.com/v1/zipresult",  strings.NewReader(allBodyUUIDs.(string)))
	if err2 != nil {
		log.Fatal("NewRequest: ", err2)
		return err2
	}
	req2.Header.Set("Content-Type", "application/x-www-form-urlencoded")
	req2.Header.Set("Authorization", bearer)
	// get response
	resp3 ,err3 := client.Do(req2)
	if err3 != nil{
		log.Fatal("NewRequest: ", err3)
		return err3
	}
	defer resp3.Body.Close()
	// read body
	body2, err4:= ioutil.ReadAll(resp3.Body)
	if err4 != nil{
		return err4
	}
	return c.String(http.StatusOK, string(body2[:]))

}