Playfab Cloudscript JSON

Question

我在Cloudscript上有这个Playfab：

// need to ensure that our data field exists
var tracker = {}; // this would be the first login ever (across any title), so we have to make sure our record exists.
if(GetUserReadOnlyDataResponse.Data.hasOwnProperty(CHECK_IN_TRACKER))
{
    tracker = JSON.parse(GetUserReadOnlyDataResponse.Data[CHECK_IN_TRACKER].Value);
    log.info(tracker);
    log.info(tracker[TRACKER_NEXT_GRANT]);
}

CHECK_IN_TRACKER JSON在这里：

"{\"LoginStreak\":1,\"NextEligibleGrant\":1564966026746}"

运行cloudscript时，将返回以下内容：

{"LoginStreak":1,"NextEligibleGrant":1564966026746}

  

现在日期：1564889283523>未定义

我不知道为什么我不确定，有什么主意吗？

谢谢