小程序添加卡券到卡包提示“参数错误”
[{cardExt:"{“code”:“0000022”,“openid”:“oMPQO0QItSPC-_GMHBkerETYURtx”,“timestamp”:1537261534,“signature”:“3bbc07894985dca4433af10ec9abe521734cf700”,“nonce_str”:“d7fb7f8b665b49b9be89b475e07f387f”}"
cardId:“p3AfwwOmNMctaR74Lhh9a-a-3XiB”}]
openid是小程序登陆用户的openid是否可以?