Adicionar Claims

Question

Estou adicionado 3 Claims:

salesId (integer)
firstName (string)
isEnabled (boolean)

Com a string funciona perfeitamente, mas com as propriedades do tipo integer ou bool, nao consigo.

var claims = principal.Claims.ToList();
claims.Add(new Claim("firstName", user.FirstName ?? string.Empty));  //funciona ok

claims.Add(new Claim("salesId", user.SalesId)); //erro
claims.Add(new Claim("salesId", user.SalesId ?? 0)); //erro
Cannot convert from 'int' to 'System.Security.Claims.ClaimsIdentity'

claims.Add(new Claim("isEnabled", user.IsEnabled)); //erro
claims.Add(new Claim("isEnabled", user.IsEnabled ?? false )); //erro
Cannot convert from 'bool' to 'System.Security.Claims.ClaimsIdentity'

Como posso fazer isso ?
Valeu