Unity解析key不确定的Json

遇到Json的key不固定时，只需要解析value，如下Json data下的key（1和2）是变化的：

{
    "status": 1,                
    "msg": "success",        
    "data": [
        "1:": {
            "atitle": "test",
            "imgurl": "http://test.png",
            "cgid": "1",
            "saedate": "05/02/2020 - 05/06/2020"
        },
        "2:": {
            "atitle": "test",
            "imgurl": "http://test.png",
            "cgid": "1",
            "saedate": "05/02/2020 - 05/06/2020"
        }
    ]
}

var jsonObject = MiniJSON.jsonDecode(str);
var jsonToHashtable = jsonObject as Hashtable;
if (jsonToHashtable != null) {
    if (jsonToHashtable.Contains("status")) {
        var statusObj = jsonToHashtable["status"];
        int statusInt = Convert.ToInt32(statusObj);
        if (statusInt == 1) {
            if (jsonToHashtable.Contains("data")) {
                var data = jsonToHashtable["data"];
                var dataHashtable = data as Hashtable;
                foreach(var values in dataHashtable.Values) {
                    string dataItemStr = MiniJSON.jsonEncode(values);
                    PayInfo payInfo = JsonConvert.DeserializeObject<PayInfo>(dataItemStr);
                }                                                               
            }
        }
    }                
}

public class PayInfo {
    public string atitle = "";
    public int cgid;
    public string imgurl;
    public string saedate;
}