Token creation method of JWT API.

AuthenticationService.cs

public async Task<TokenResponse> CreateAccessTokenAsync(string email, string password)
{
    var user = await _userService.FindByEmailAsync(email);

    if (user == null || !_passwordHasher.PasswordMatches(password, user.Password))
    {
        return new TokenResponse(false, "Invalid credentials.", null);
    }

    var token = _tokenHandler.CreateAccessToken(user);

    return new TokenResponse(true, null, token);
}