Update running time exec

src/Managing.Application.Abstractions/Grains/ICandleStoreGrain.cs

@@ -14,7 +14,7 @@ public interface ICandleStoreGrain : IGrainWithStringKey
     /// Gets the current list of historical candles (up to 500 most recent)
     /// </summary>
     /// <returns>List of candles ordered by date</returns>
-    Task<List<Candle>> GetCandlesAsync();
+    Task<HashSet<Candle>> GetCandlesAsync();
     Task<Candle> GetLastCandle();
 }