#!/usr/bin/env perl use strict;use warnings; use Encode qw(encode_utf8);use HTTP::Request ();use JSON::MaybeXS qw(encode_json); my $url = 'https://www.example.com/api/user/123';my $header = ['Content-Type' => 'application/json; charset=UTF-8'];my $data = {foo => 'bar', baz => 'quux'};my $encoded_data = encode_utf8(encode_json($data)); my $r = HTTP::Request->new('POST', $url, $header, $encoded_data);# at this point, we could send it via LWP::UserAgent# my $ua = LWP::UserAgent->new();# my $res = $ua->request($r);