https://learn.microsoft.com/zh-tw/dotnet/api/system.identitymodel.tokens.samlsubjectstatement.samlsubject?view=netframework-4.8.1
SamlSubjectStatement.SamlSubject Property (System.IdentityModel.Tokens) | Microsoft Learn
Gets or sets the subject of a SamlSecurityToken security token.
property systemtokensmicrosoftlearn