尝试一下-

public class CorporateRatesInfo
{
    public string Conum { get; set; }
    public string Name { get; set; }
    public string AgencyName { get; set; }
    public List<SaaCode> SaaCodes { get; set; }
}

public class SaaCode
{
    public string Code { get; set; }
    public string Description { get; set; }
}

public class CorporateRatesProfile : Profile
{
    protected override void Configure()
    {
        CreateMap<JObject, SaaCode>()
            .ForMember("Code", cfg => { cfg.MapFrom(jo => jo["code"]); })
            .ForMember("Description", cfg => { cfg.MapFrom(jo => jo["description"]); });

        CreateMap<JObject, CorporateRatesInfo>()
            .ForMember("SaaCodes", cfg => { cfg.MapFrom(jo => jo["sAA"]); })
            .ForMember("Conum", cfg => { cfg.MapFrom(jo => jo["conum"]); })
            .ForMember("Name", cfg => { cfg.MapFrom(jo => jo["name"]); })
            .ForMember("AgencyName", cfg => { cfg.MapFrom(jo => jo["agencyName"]); });


    }
}

class Program
{
    static void Main(string[] args)
    {

        var config = new MapperConfiguration(cfg =>
        {
            cfg.CreateMap<JObject, CorporateRatesInfo>();
            cfg.AddProfile<CorporateRatesProfile>();
        });

        //config.AssertConfigurationIsValid();
        var mapper = config.CreateMapper();

        var jsonText =  @"
                            {
                                ""conum"" : 1001,
                                ""name"" : ""CLN Industries Corporation"",
                                ""agencyName"" : ""Murphy, Holmes & Associates, LLC"",
                                ""sAA"" : [{
                                        ""code"" : 247,
                                        ""description"" : ""Mechanic\u0027s lien - Bond to Discharge - Fixed penalty - where principal has posted Performance and Pa""
                                    }, {
                                        ""code"" : 277,
                                        ""description"" : ""Mechanic\u0027s lien - Bond to Discharge - Open Penalty - where principal has posted Performance and Paym""
                                    }, {
                                        ""code"" : 505,
                                        ""description"" : ""Indemnity Bonds - Contractor\u0027s Indemnity Against Damages where there is a performance bond and addit""
                                    }
                                ]
                            }
                        ";

        var jsonoObj = JObject.Parse(jsonText);

        CorporateRatesInfo dto = mapper.Map<CorporateRatesInfo>(jsonoObj);



    }
}