send file attach

require(["N/https", "N/file"], function (https, file) {
var fileObj = file.load({id: 42460});
var postData = "------WebKitFormBoundary7MA4YWxkTrZu0gW\r\nContent-Disposition: form-data; name=\"file\"; filename=\"" + fileObj.name + "\"\r\nContent-Type: \"PLAINTEXT\"\r\n\r\n" + fileObj.getContents() + "\r\n------WebKitFormBoundary7MA4YWxkTrZu0gW--";
var header = {'content-type': 'multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW'};
var response = https.request({
method: https.Method.POST,
url: 'https://beta.payjoy.com/loans/v2/api/h2h-endpoint?action=upload&adminid=4006&token=PXzkQe83Hc1IR0f',
body: postData,
headers: header
});
log.debug('HOLO')
});