I need to get an access token so I check the Tuya

// API URL
$api_url = "https://openapi.tuyaeu.com/v1.0/token?grant_type=1";

$timestamp = round(microtime(true) * 1000);

$headers = [
    "grant_type: 1",
    "client_id: xwnaaaaaaaaaaaaarae8y",
    "secret: 0dfaaaaaaaaaaaaaaaaaaa37872d",
    "t: $timestamp",
];

$ch = curl_init($api_url);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "GET"); 
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo "cURL Error: " . curl_error($ch);
} else {
    echo "Response: " . $response;
}

curl_close($ch);
?>

then I got the error: Response: {“code”:1004,”msg”:”sign invalid”,”success”:false,”t”:1733675216618,”tid”:”3ded2504b58111ef828e8aa4893defa6″}

Does anybody have experience with tuya API and how to get access token?