diff --git a/CryptoExchange.Net/Converters/SystemTextJson/ArrayConverter.cs b/CryptoExchange.Net/Converters/SystemTextJson/ArrayConverter.cs
index fb48322..1a58ad4 100644
--- a/CryptoExchange.Net/Converters/SystemTextJson/ArrayConverter.cs
+++ b/CryptoExchange.Net/Converters/SystemTextJson/ArrayConverter.cs
@@ -96,7 +96,10 @@ namespace CryptoExchange.Net.Converters.SystemTextJson
 
                     var attribute = attributes.SingleOrDefault(a => a.ArrayProperty.Index == index);
                     if (attribute == null)
+                    {
+                        index++;
                         continue;
+                    }
 
                     var targetType = attribute.TargetType;
                     object? value = null;
diff --git a/CryptoExchange.Net/Converters/SystemTextJson/NumberStringConverter.cs b/CryptoExchange.Net/Converters/SystemTextJson/NumberStringConverter.cs
new file mode 100644
index 0000000..a45014a
--- /dev/null
+++ b/CryptoExchange.Net/Converters/SystemTextJson/NumberStringConverter.cs
@@ -0,0 +1,31 @@
+using System;
+using System.Globalization;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace CryptoExchange.Net.Converters.SystemTextJson
+{
+    /// <summary>
+    /// Read string or number as string
+    /// </summary>
+    public class NumberStringConverter : JsonConverter<string?>
+    {
+        /// <inheritdoc />
+        public override string? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+        {
+            if (reader.TokenType == JsonTokenType.Null)
+                return null;
+
+            if (reader.TokenType == JsonTokenType.Number)
+                return reader.GetInt64().ToString();
+
+            return reader.GetString();
+        }
+
+        /// <inheritdoc />
+        public override void Write(Utf8JsonWriter writer, string? value, JsonSerializerOptions options)
+        {
+            writer.WriteStringValue(value);
+        }
+    }
+}