发布商帐户中的登录管理器项目ID。

URL to redirect the user to after account confirmation, successful authentication, two-factor authentication configuration, or password reset confirmation. Must be identical to the Callback URL specified in the URL block of Publisher Account. For the scenario of a login error, the value should be identical to the the Error callback URL specified in the URL block of Publisher Account. To find the settings, go to Login > your Login project and select the Callback URLs section in the upper block. Required if there are several Callback URLs.

Your custom data. The value of the parameter will be returned in the payload claim of the user JWT. Recommended maximum length less than 500 characters. Note, that this parameter is only available if you use a custom user data storage.