Owney how to use with php

owney.php

<?php
 
$curl = curl_init();
 
curl_setopt_array($curl, array(
CURLOPT_URL => "owneymail.com/api/v1/owney/go",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => '{
    "templateCode": "WELCOME",
    "content": {
        "title" : "John Doe",
        "hero" : "https://colorlib.com/etc/email-template/1/images/bg_1.jpg"
    },
    "from": "hi@owneymail.com",
    "to": ["noreply@johnDoe.com"],
    "cc": ["noreply@johnDoe.com"],
    "bcc": ["noreply@johnDoe.com"]
}',
CURLOPT_HTTPHEADER => array(
    "authorization: Bearer <<YOUR_API_KEY>>",
    "content-type: application/json"
),
));
 
$response = curl_exec($curl);
$err = curl_error($curl);
 
curl_close($curl);
 
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}