test.php

<?php

$urls = [
    'https://media.discordapp.net/attachments/922167218974916668/925236927093944320/b6a3bef7-224c-46b5-a369-542544b21340.png'
];

$url = "https://mail.yandex.ru/web-api/models/liza1?_m=do-sanitize";

$curl = curl_init($url);
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);

$headers = array(
    "Cookie: yuidss=7988020541636788093; yandexuid=7988020541636788093; _ym_uid=1664167154348419930; _ym_d=1664167155; is_gdpr=0; is_gdpr_b=CIyaHxCxlAEoAg==; my=YycCAAMA; L=QzBHclpxZANWWl5sXWJ+dH9cbmAIYGdsGD8lLQYEMFgVXBAFKxs6FQ==.1667977057.15156.338425.c31d59089b6bbe6142b1ea62f903de78; yandex_login=hoangvananhnghia; skid=2455671331668005686; gdpr=0; ymex=1703803048.yrts.1672267048; yp=1670865349.csc.1#1683954940.szm.3:1280x800:1280x649; i=2UmKyCpF0vdtjOZVwkcBuSIIee0TAFdWDAmYlKV2cvoWI/W2f28IYqetY//fBFgI1j8fxpautn7CC34eUnMezX9pkWI=; bltsr=1; KIykI=1; font_loaded=YSv1; _yasc=DiZosfQMGutAJWzVcVjd8QiFNkqxEzfyVPSjZbVxb3H6a4uNSEfdTCgeLpGi7cFg; Session_id=3:1673291141.5.0.1667976456178:vvProWF54fWb9CoDgJ0CJA:3e.1.2:1|1711147561.601.2.0:3.1:327036949.2:601|3:10263855.571921.vWIPJf0Mw0tyQbbuBmq5ncdRWPo; sessionid2=3:1673291141.5.0.1667976456178:vvProWF54fWb9CoDgJ0CJA:3e.1.2:1|1711147561.601.2.0:3.1:327036949.2:601|3:10263855.571921.fakesign0000000000000000000; sessguard=1.1673291141.1667976456178:vvProWF54fWb9CoDgJ0CJA:3e..3.500:31634.GVLGDc9O.09tdpZW4HqzH5sgGMEOQ29-_5LY; mda2_beacon=1673291141507; lah=2:1736363141.10019756.xyTTuYaoB0j4qqOE.LhL3tsQi-WQiKoARGm-GWCE-AX-mJFniqGBW.cubaklT8v9OmZsHsNjhB1A",
    "Content-Type: application/json",
);
curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);


$content = "";

foreach ($urls as $url) {
    $content .= '<img style=\"max-width: 100%\" src=\"' . $url . '\">';
}

// ckey,  _connection_id
$data = '{
   "models":[
      {
         "name":"do-sanitize",
         "params":{
            "content":"' . $content . '"
         },
         "meta":{
            "requestAttempt":1
         }
      }
   ],
   "_ckey":"PDSNy8MM9ME9Liv31SgCGh+gdfk=!lcqncwy0",
   "_uid":"",
   "_locale":"en",
   "_timestamp":"1673291141877",
   "_product":"RUS",
   "_connection_id":"LIZA-79406497-1673291141877",
   "_exp":"",
   "_eexp":"",
   "_service":"LIZA",
   "_version":"95.1.0",
   "_messages_per_page":"1000"
}
';

curl_setopt($curl, CURLOPT_POSTFIELDS, $data);

//for debug only!
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);

$resp = curl_exec($curl);
curl_close($curl);

$resp = json_decode($resp);

$html = $resp->models[0]->data->result;

// get urls img
preg_match_all("/src=\"(.*?)\"/", $html, $matches);
$urls = $matches[1];

print_r($urls);