Remove unnecessary properties and so one when you are

RemoveSerializedAttributes

var data = JsonConvert.SerializeObject(message, Formatting.None, new JsonSerializerSettings
                {
                    ContractResolver = new ExcludePropertiesContractResolver(new []{"SuccessMessage", "ErrorMessage"})
                });
                
                
                 public class ExcludePropertiesContractResolver : DefaultContractResolver
    {
        private readonly List<string> ExcludedProperties;

        public ExcludePropertiesContractResolver(IEnumerable<string> excludedProperties)
        {
            ExcludedProperties = excludedProperties.Select(x=>x.Trim().ToLower()).ToList();
        }

        protected override IList<JsonProperty> CreateProperties(Type type, MemberSerialization memberSerialization)
        {
            return base.CreateProperties(type, memberSerialization)
                .Where(x => !ExcludedProperties.Contains(x.PropertyName.Trim().ToLower())).ToList();
        }
    }