How to receive the user's email for Sign in with Apple on not the initial request.

Our service requires the users to register email address.
So, we need to receive the information of email on Sign in with Apple.

But, we doesn't not receive the email address for Sign in with Apple on not the initial request.
Is there a way to get the information of email ?

Any help would be appreciated.
The email is included in the identity token on subsequent requests. The related claims are as follows—
  • email: A String value representing the user’s email address. The email address will be either the user’s real email address or the proxy address, depending on their status private email relay service.

  • email_verified: A String or Boolean value that indicates whether the service has verified the email. The value of this claim is always true, because the servers only return verified email addresses. The value can either be a String ("true") or a Boolean (true).

  • is_private_email: A String or Boolean value that indicates whether the email shared by the user is the proxy address. The value can either be a String ("true" or "false") or a Boolean (true or false).



For additional information about the identity token, please see Authenticating Users with Sign in with Apple.
How to receive the user's email for Sign in with Apple on not the initial request.
 
 
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