URL Presigned AMZON S3

Question

I'm not able to make url Presigned to my subdomain pointed to my bucket,

URL AMAZON - /mybucket/logo.jpg

OR

MY SUBDOMAIN - / logo.jpg

Works correctly

But when file is private, I need to generate permission, so it would look like this, but when I put the access key in the subdomain it does not work.

URL ORIGINAL AMAZON

SUBDOMAIN + KEY, DOES NOT WORK

my php code

$cmd = $client->getCommand('GetObject', [
    'Bucket' => 'teste.darpine.com',
    'Key'    => 'cover.jpg'
]);
$request = $client->createPresignedRequest($cmd, '+10 hours');
echo $presignedUrl = (string) $request->getUri();

Someone please introduce me a light.