我想接微信的OAuth2，但是发现认证信息里面没有邮箱，所以可能需要重写一部分单点登录的逻辑，用nickname匹配账号

{
:provider => "wechat",
:uid => "123456789",
:info => {
nickname: "Nickname",
sex: 1,
province: "Changning",
city: "Shanghai",
country: "China",
headimgurl: "http://image_url",
unionid: 'unionid'
},
:credentials => {
:token => "token",
:refresh_token => "another_token",
:expires_at => 7200,
:expires => true
},
:extra => {
:raw_info => {
openid: "openid"
nickname: "Nickname",
sex: 1,
province: "Changning",
city: "Shanghai",
country: "China",
headimgurl: "http://image_url",
unionid: 'unionid'
}
}
}