JSFiddle - React, Tailwind, and code Playground

JavaScript

$(function() {
        var arr = {"ShopName": "Brestmotors", "PhoneShop": "375259823140", "ApplicationNumber": "12343551", "Date": '2019-01-02T00:00:00', "Product": "1","Term": "10","LastName": "Борис","FirstName": "Виталий","MiddleName": "Александрович","FullNameStr": " Борис Виталий Александрович","PhoneContact": "375259823140",
  "ProductOrder": [
        {
          "ProductName": "Смартфон",
          "BrandName": "Samsung",
          "Modification": "Samsung Galaxy J7 (2017) Dual SIM (черный) [SM-J730FM/DS])",
          "Quantity": "2",
          "ProductPrice": "1088.4",
          "ShippingPrice": "4",
          "ProductURL": "https://catalog.onliner.by/mobile/samsung/galaxyj72017ds",
          "PictureURL": "https://content2.onliner.by/catalog/device/header/193dc2cd8a6e3c00cbb79c7aad21532b.jpeg"
        }
      ],
      "TotalPrice": "1827.56",
      "InitialFee": "250",
      "CreditAmount": "1577.56"
     };
  $.ajax({
      headers: {"Authorization": "Basic a3ZhbGltYmVsOjF5MTNOMk1KOU0="},
      url: 'https://37.17.36.103/services/v2/shop/setExternalOrder',
      method: 'POST',
      data: JSON.stringify(arr),
      dataType: 'jsonp',
contentType: 'application/json',
      async: false,
      success: function(msg) {
          console.log(msg);
      }

  });
});