$secret_key = '9fff8c602b08b00323567be0001480f6';
$data = '{\"order_id\": \"FACTPRECHR152632\", \"amount\": \"8300.00\"}';
$str = $data . $secret_key;
$result = hash('sha1', $str);
echo $result . PHP_EOL;
echo hash('sha1', "{\"order_id\": \"FACTPRECHR152632\", \"amount\": \"8300.00\"}".'9fff8c602b08b00323567be0001480f6') . PHP_EOL;
echo 'cbfb21630cd585f59c3a50fc3365d8c26b97cd4e';