一对多关系 LINQ 更新查询

问：

我有一个一对多/多对多关系黑白和中间表。UserProfileAddressMasterUserAddress

public class UserProfile
{
        public string UserID { get; set; }
        public string Name{ get; set; }
        public ICollection<UserAddress> UserAddress{ get; set; }
}

public class AddressMaster
{
        public string AddrID{ get; set; }
        public string AddressLine1{ get; set; }
        public ICollection<UserAddress> UserAddress{ get; set; }
        public TheatreLocation TheatreLocation { get; set; }
}

public class UserAddress
    {
        public Guid UserID { get; set; }
        public Guid AddressID { get; set; }
        public UserProfile UserProfile{ get; set; }
        public AddressMaster AddressMaster { get; set; }
    }

现在我正在尝试通过JSON从API输入数据：

{
    "Name": "Neo",            
    "address": 
        {
            "addressLine1": "House not"            
        }
    
}

为此，我有一个 DTO 来获取这些参数。下面是我的控制器代码。

public async Task<Guid> Handle(CreateUserCommand request, CancellationToken cancellationToken) 
        {                           
            var userEntity = new UserProfile
            {                   
                Name = request.Name,                         
            };
            _context.UserProfile.Add(userEntity);
            
            AddressMaster addressMaster = request.Address;
            
            _context.AddressMaster.Add(addressMaster);

            UserAddresses userAddresses = new UserAddresses 
            {
                AddressID = addressMaster.AddressID,
                UserID = userEntity.UserID
            };
            _context.UserAddresses.Add(userAddresses);                                                        

            await _context.SaveChangesAsync(cancellationToken);

            return userEntity.UserID;
        }

我正在尝试将数据单独存储到各自的表中，然后尝试将其映射到中间表。我不确定这是否是正确的方法，但数据正在存储在数据库中。

谢谢:)