ClientApiPoC/Shared/Models/ClientDataModel.cs

namespace ClientApiPoC.Shared.Models {
    public class ClientDataModel {
        public string? Data { get; set; } = null;

        public DateTime TimestampClientUtc { get; set; } = DateTime.UtcNow;

        public DateTime TimestampServerUtc { get; set; } = DateTime.MinValue;
    }
}