TokenIssue.cs

var tokenHandler = new JwtSecurityTokenHandler();
var key = Encoding.ASCII.GetBytes(_jwtSettings.Secret);

var claims = new List<Claim>
{
    new Claim(JwtRegisteredClaimNames.Sub, user.Email),
    new Claim(JwtRegisteredClaimNames.Jti, Guid.NewGuid().ToString()),
    new Claim(JwtRegisteredClaimNames.Email, user.Email),
    new Claim("id", user.Id)
};

var userClaims = await _userManager.GetClaimsAsync(user);
claims.AddRange(userClaims);
var tokenDescriptor = new SecurityTokenDescriptor
{
    Subject = new ClaimsIdentity(claims),
    Expires = DateTime.UtcNow.Add(_jwtSettings.TokenLifetime),
    SigningCredentials =
        new SigningCredentials(new SymmetricSecurityKey(key), SecurityAlgorithms.HmacSha256Signature)
};

var token = tokenHandler.CreateToken(tokenDescriptor);