leancloud 4.4.8 fastjson反序列化和序列化

fastjson序列化返货"{}";
反序列化所有的字段都为空
public class ActionReceiveMsg implements Parcelable {
private String clientid;
private String signal;

public String getClientid() {
    return clientid;
}

public void setClientid(String clientid) {
    this.clientid = clientid;
}

public String getSignal() {
    return signal;
}

public void setSignal(String signal) {
    this.signal = signal;
}

@Override
public int describeContents() {
    return 0;
}

@Override
public void writeToParcel(Parcel dest, int flags) {
    dest.writeString(this.clientid);
    dest.writeString(this.signal);
}

public ActionReceiveMsg() {
}

protected ActionReceiveMsg(Parcel in) {
    this.clientid = in.readString();
    this.signal = in.readString();

}

public static final Creator<ActionReceiveMsg> CREATOR = new Creator<ActionReceiveMsg>() {
    @Override
    public ActionReceiveMsg createFromParcel(Parcel source) {
        return new ActionReceiveMsg(source);
    }

    @Override
    public ActionReceiveMsg[] newArray(int size) {
        return new ActionReceiveMsg[size];
    }
};

}
String test = "{\"clientid\": "ddddddd", \"signal\":\"status\"}";
ActionReceiveMsg receiveMsg = JSON.parseObject(test,ActionReceiveMsg.class);
if(receiveMsg != null){
LogUtil.i("Test",receiveMsg.getSignal()+" ddd");
}else{
LogUtil.i("Test","解析失败");
}

Android：
compileSdkVersion 26
buildToolsVersion "26.0.1"