APP调用微信登录，调用sns/userinfo接口，能获得到unionid，获取不到用户头像地址？

{

"country": "",

"unionid": "oWPpG57RF2CGeexkcc51WwxMkVBA",

"province": "",

"city": "",

"openid": "ohDI\_1F0MS5UsFybwaevTaBRha5o",

"sex": 0,

"nickname": "测试号-勿加",

"headimgurl": "",

"language": "zh\_CN",

"privilege": \[\]

}