diff --git a/UsageWatcher/Model/UsageModel.cs b/UsageWatcher/Model/UsageModel.cs
index afa12c9..f50d1aa 100644
--- a/UsageWatcher/Model/UsageModel.cs
+++ b/UsageWatcher/Model/UsageModel.cs
@@ -1,4 +1,5 @@
-using System;
+using Newtonsoft.Json;
+using System;
 using UsageWatcher.Enums;
 
 namespace UsageWatcher.Model
@@ -14,5 +15,14 @@ public UsageModel(Resolution resolution, DateTime startTime)
             StartTime = startTime;
             EndTime = startTime + TimeSpan.FromMilliseconds((double)resolution);
         }
+
+        [JsonConstructor]
+        [System.Diagnostics.CodeAnalysis.SuppressMessage("CodeQuality",
+            "IDE0051:Remove unused private members", Justification = "Only for Json it is used")]
+        private UsageModel(DateTime startTime, DateTime endTime)
+        {
+            StartTime = startTime;
+            EndTime = endTime;
+        }
     }
 }