I have a problem with my script

Am getting this error

{"code":401,"message":"Signature has expired"}401 Unauthorized
[download]

Full code

#!/usr/bin/perl - wT

use strict;
use warnings;
use HTTP::Request;
use JSON;
use HTTP::Tiny;
use LWP::UserAgent;
use JSON::WebToken;
use Digest::SHA qw(hmac_sha256_hex);

my $ua = LWP::UserAgent->new( ssl_opts => { verify_hostname => 0 }, );
$ua->agent("MyApp/0.1");

my $apiKey = 'key';
my $apiSecret = 'secret key';

my $urlcb = "https://api.poloniex.com/v2/wallets/withdraw";
my $url = URI->new($urlcb);
my $urlpath = $url->path();

my $nonce = time;
my %mas = (
"coin" => "USDT",
"network"   => "TRX",
"amount" => "10",
"address" => "TL81N0N8EEf4cAwayizMHuUuo6666666"
);
my $json = encode_json \%mas;

my $signature = hmac_sha256_hex($nonce.'POST'.$urlpath.$json, $apiSecr
+et);
my %payload = (
"key" => $apiKey,
"signatureMethod" => 'HmacSHA256',
"signatureVersion" => '2',
"signTimestamp" => $nonce,
"signature" => $signature
);

my $req = HTTP::Request->new(POST => $url);
$req->content_type('application/json');
$req->header(%payload);
$req->content($json);

my $resp = $ua->request($req);

if ($resp->is_success) {
  print $resp->decoded_content;
  print $resp->status_line, "n";
} else {
  print $resp->decoded_content;
  print $resp->status_line, "n";
}
[download]

 API Reference: https://api-docs.poloniex.com/spot/api/#signature-example-code

 Withdraw Section: https://api-docs.poloniex.com/spot/api/private/wallet#withdraw-currency-v2