if  let email = data["Email"] as? String,
                let name = data["Name"] as? String,
                let surname = data["Surname"] as? String,
                let identityNumber = data["IdentityNumber"] as? String ?? nil,
                let regAddress = data["RegistrationAddress"] as? String,
                let regZipCode = data["RegistrationZipCode"] as? String,
                let phoneNumber = data["PhoneNumber"] as? String,
                let city = data["City"] as? String {

                let user = User(name: name, surname: surname, idNumber: identityNumber, regAddress: regAddress, regZipCode: regZipCode, phoneNumber: phoneNumber, city: city)
            }