array(8) {
  [0]=>
  string(42) "AccessKey=480dcefb-33fbe450-e4508725-87258"
  [1]=>
  string(26) "SignatureMethod=HmacSHA256"
  [2]=>
  string(21) "SignatureVersion=V1.0"
  [3]=>
  string(33) "Timestamp=2018-09-20T04%3A57%3A24"
  [4]=>
  string(17) "symbol=ETH%2FUSDT"
  [5]=>
  string(13) "tokenNum=2.45"
  [6]=>
  string(12) "sprice=478.2"
  [7]=>
  string(56) "Signature=0uFGJwSNpFTWfg5T7TbJLwG3ljXZPxKjM4oHaKMc9T8%3D"
}
string(227) "AccessKey=480dcefb-33fbe450-e4508725-87258&SignatureMethod=HmacSHA256&SignatureVersion=V1.0&Timestamp=2018-09-20T04%3A57%3A24&symbol=ETH%2FUSDT&tokenNum=2.45&sprice=478.2&Signature=0uFGJwSNpFTWfg5T7TbJLwG3ljXZPxKjM4oHaKMc9T8%3D"