Please see valid constructors here: https://github.com/jaggedsoft/php-binance-api/blob/master/examples/constructor.phpsignedRequest error: {
  "code": 0,
  "msg": "Service unavailable from a restricted location according to 'b. Eligibility' in https://www.binance.com/en/terms. Please contact customer service if you believe you received this message in error."
}
Array
(
    [] => 
    [S] => S
)