How to pass object to request body

Question

namespace Entities
{
    public class Myclass
    {


        public class Payee
        {
            public string name { get; set; }
            public string accountNumber { get; set; }
        }

        public class Payer
        {
            public string bankProfileId { get; set; }
            public string accountNumber { get; set; }
        }

        public Payer payer { get; set; }
        public Payee payee { get; set; }
        public string transferMode { get; set; }
        public string transferAmount { get; set; }
        public string externalRef { get; set; }
        public string latitude { get; set; }
        public string longitude { get; set; }
        public string remarks { get; set; }
        public string alertEmail { get; set; }

    }

}