namespace ContactManagementAPI.Models { public class AdminHistoryEntry { public string ActionType { get; set; } = string.Empty; public string EntityType { get; set; } = string.Empty; public int? EntityId { get; set; } public string Details { get; set; } = string.Empty; public string PerformedBy { get; set; } = string.Empty; public DateTime PerformedAt { get; set; } } }