events[1]:
    {
    "id": 1,
    "name": "oleg",
    "old": 42
    }

events[2]:
{
    "id": 2,
    "name": "ivan",
    "old": 27
}
events[3]:
{
    "id": 3,
    "name": "stapen",
    "old": 19
}

const express = require('express');
const app = express();
const multer = require('multer');
const upload = multer();

 app.post('/api', upload.any(), function (req, res) {
   var body = JSON.parse(req.body.events[1]);
    res.send(body);
 })

    app.listen(8000, function(req,res){
    console.log('Listen port: 8000');
    });