private static void SignPetition()
{
Console.WriteLine();
Guid petitionGuid = GetPetitionGuid();
Console.WriteLine();
Console.Write("Email: ");
var email = Console.ReadLine();
Console.Write("First name: ");
var firstName = Console.ReadLine();
Console.Write("Last name: ");
var lastName = Console.ReadLine();
_service.SignPetition(petitionGuid, email, firstName, lastName);
Console.WriteLine("Petition signed!");
Console.WriteLine("Press any key to return to the menu...");
Console.ReadKey();
}