public async Task Update(User entity)
{
var updatedUser = UserTable.Existing(entity);
var entry = await context.Users.SingleAsync(x => x.Id == updatedUser.Id);
entry.Name = updatedUser.Name;
entry.AccessKey = updatedUser.AccessKey;
entry.CountryCode = updatedUser.CountryCode;
context.Update(updatedUser);
await context.SaveChangesAsync();
}
