array(8) {
  ["return_code"] => string(7) "SUCCESS"
  ["result_code"] => string(4) "FAIL"
  ["err_code"] => string(11) "SYSTEMERROR"
  ["mch_id"] => string(10) "1573611991"
  ["appid"] => string(18) "wxd78678d3284fb09f"
  ["receiver"] => string(79) "{"type":"PERSONAL_WECHATID","account":"zzy_1093849399","relation_type":"STORE"}"
  ["nonce_str"] => string(16) "85d07250e554dcf3"
  ["sign"] => string(64) "EFFE1A47B6645A9ECA3AC51F89A3A08168B677B829340B31609C58A0D9E7ED32"
}