diff --git a/CryptoExchange.Net/Clients/RestApiClient.cs b/CryptoExchange.Net/Clients/RestApiClient.cs
index dfcc49a..6b6b813 100644
--- a/CryptoExchange.Net/Clients/RestApiClient.cs
+++ b/CryptoExchange.Net/Clients/RestApiClient.cs
@@ -624,7 +624,7 @@ namespace CryptoExchange.Net.Clients
                 paramString = $" with request body '{request.Content}'";
 
             var headers = request.GetHeaders();
-            if (headers.Any())
+            if (headers.Count != 0)
                 paramString += " with headers " + string.Join(", ", headers.Select(h => h.Key + $"=[{string.Join(",", h.Value)}]"));
 
             TotalRequestsMade++;
@@ -908,8 +908,8 @@ namespace CryptoExchange.Net.Clients
             {
                 // Write the parameters as json in the body
                 string stringData;
-                if (parameters.Count == 1 && parameters.ContainsKey(Constants.BodyPlaceHolderKey))
-                    stringData = CreateSerializer().Serialize(parameters[Constants.BodyPlaceHolderKey]);
+                if (parameters.Count == 1 && parameters.TryGetValue(Constants.BodyPlaceHolderKey, out object? value))
+                    stringData = CreateSerializer().Serialize(value);
                 else
                     stringData = CreateSerializer().Serialize(parameters);
                 request.SetContent(stringData, contentType);
diff --git a/CryptoExchange.Net/Objects/Enums.cs b/CryptoExchange.Net/Objects/Enums.cs
index a0f877c..27e8e35 100644
--- a/CryptoExchange.Net/Objects/Enums.cs
+++ b/CryptoExchange.Net/Objects/Enums.cs
@@ -235,4 +235,18 @@
         Cache
     }
 
+    /// <summary>
+    /// Type of exchange
+    /// </summary>
+    public enum ExchangeType
+    {
+        /// <summary>
+        /// Centralized
+        /// </summary>
+        CEX,
+        /// <summary>
+        /// Decentralized
+        /// </summary>
+        DEX
+    }
 }
diff --git a/CryptoExchange.Net/Objects/TimeSyncState.cs b/CryptoExchange.Net/Objects/TimeSyncState.cs
index 8185302..021a9fb 100644
--- a/CryptoExchange.Net/Objects/TimeSyncState.cs
+++ b/CryptoExchange.Net/Objects/TimeSyncState.cs
@@ -82,12 +82,12 @@ namespace CryptoExchange.Net.Objects
             TimeSyncState.LastSyncTime = DateTime.UtcNow;
             if (offset.TotalMilliseconds > 0 && offset.TotalMilliseconds < 500)
             {
-                Logger.Log(LogLevel.Information, $"{TimeSyncState.ApiName} Time offset within limits, set offset to 0ms");
+                Logger.Log(LogLevel.Information, "{TimeSyncState.ApiName} Time offset within limits, set offset to 0ms", TimeSyncState.ApiName);
                 TimeSyncState.TimeOffset = TimeSpan.Zero;
             }
             else
             {
-                Logger.Log(LogLevel.Information, $"{TimeSyncState.ApiName} Time offset set to {Math.Round(offset.TotalMilliseconds)}ms");
+                Logger.Log(LogLevel.Information, "{TimeSyncState.ApiName} Time offset set to {Offset}ms", TimeSyncState.ApiName, Math.Round(offset.TotalMilliseconds));
                 TimeSyncState.TimeOffset = offset;
             }
         }
diff --git a/CryptoExchange.Net/Requests/RequestFactory.cs b/CryptoExchange.Net/Requests/RequestFactory.cs
index 693e91d..91bb97c 100644
--- a/CryptoExchange.Net/Requests/RequestFactory.cs
+++ b/CryptoExchange.Net/Requests/RequestFactory.cs
@@ -37,7 +37,7 @@ namespace CryptoExchange.Net.Requests
             _httpClient = CreateClient(proxy, requestTimeout);
         }
 
-        private HttpClient CreateClient(ApiProxy? proxy, TimeSpan requestTimeout)
+        private static HttpClient CreateClient(ApiProxy? proxy, TimeSpan requestTimeout)
         {
             var handler = new HttpClientHandler();
             try