<?php

$data = array(
    "UserName" => "sagoropoulos",
    "Email" => "ds@webexpert.gr",
    "PromoCode" => "promo_code_1",
    "CouponCode" => "coupon_code_1",
    "CouponCreatedDt" => "2019-08-07T14:16:32.312493+03:00",
    "CouponDaysActive" => "50",
    "CouponAmount" => "5"
);
$data_string = json_encode($data);

$ch = curl_init('https://platform.cleverpoint.gr/api/v1/Shipping/PromoFromShopCleverPoint/');
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
        'Content-Type: application/json',
        'Content-Length: ' . strlen($data_string))
);

$result = curl_exec($ch);

print_r($result);