Add Role claim functionality https://github.com/aspnet/Identity/issues/62

gistfile1.cs

public override async Task<ClaimsIdentity> CreateAsync(UserManager<IUser, string> userManager, IUser user, string authenticationType)
{
    var id = new ClaimsIdentity(authenticationType, UserNameClaimType, null);
    id.AddClaim(new Claim(UserIdClaimType, user.Id.ToString(), ClaimValueTypes.Integer));
    id.AddClaim(new Claim(UserNameClaimType, user.UserName, ClaimValueTypes.String));
    id.AddClaim(new Claim(IdentityProviderClaimType, DefaultIdentityProviderClaimValue, ClaimValueTypes.String));


    if (userManager.SupportsUserRole)
    {
        var rolesGenericas = await userManager.GetRolesGenerica(user.Id);

        var roles = await userManager.GetRolesNonGenericFromContext(user.Id, _contextoId);

        var allRoles = rolesGenericas.Concat(roles).ToList();

        foreach (var role in allRoles)
        {
            if (role.Fluxos != null)
            {
                foreach (var fluxo in role.Fluxos)
                {
                    id.AddClaim(new Claim("BusinessFlow", fluxo.Controle, ClaimValueTypes.String));
                }
            }

            if (role.Administracoes != null)
            {
                foreach (var administracao in role.Administracoes)
                {
                    id.AddClaim(new Claim("AdministrationFlow", administracao.Controle,
                        ClaimValueTypes.String));
                }
            }

            id.AddClaim(new Claim(RoleClaimType, role.Nome, ClaimValueTypes.String));
        }
    }

    id.AddClaim(new Claim("UserContextName", _contextoNome, ClaimValueTypes.String));
    id.AddClaim(new Claim("UserContextId", _contextoId.ToString(CultureInfo.InvariantCulture), ClaimValueTypes.Integer));

    if (userManager.SupportsUserClaim)
    {
        id.AddClaims(await userManager.GetClaimsAsync(user.Id));
    }

    return await Task.FromResult(id);
}