Fix ETH openPosition

src/Managing.Domain/Indicators/LightSignal.cs

@@ -52,7 +52,7 @@ public class LightSignal
 
     [Id(5)] [Required] public Candle Candle { get; }
 
-    [Id(6)] [Required] public string Identifier { get; }
+    [Id(6)] [Required] public string Identifier { get; set; }
 
     [Id(7)] [Required] public Ticker Ticker { get; }