public void AddUser(Newtonsoft.Json.Linq.JObject obj)
{
Users user = new Users {
Name = obj["Name"].ToString(), Surname = obj["Surname"].ToString(), Pseudonym = obj["Pseudonym"].ToString(), Email = obj["Email"].ToString(), FieldOfActivity = obj["FieldOfActivity"].ToString(), City = obj["City"].ToString(), Password = obj["Password"].ToString()
};
WorkWithDb.AddNewUser(user);
}