Скачивание резервной копии

curl -k --request POST \
	--url 'https://your-domainapi/admin/v1/backups/download' \
	--header 'Content-Type: application/json' \
	--header 'Accept: application/json' \
	--data '{
    "file": "file"
}'

$data = array (
  'file' => 'file',
);
$context = stream_context_create([
	'ssl'=>['verify_peer' => false],
	'http' => [
		'method' => 'POST',
		'header' => "Content-Type: application/json\r
Accept: application/json",
		'content'=>json_encode($data)
	]
]);
$result = file_get_contents('https://your-domainapi/admin/v1/backups/download', false, $context);