log4net.Ext.Json.Serializers.Newtonsoft is a serialization plugin for log4net.Ext.Json that supports Newtonsoft’s JSON.Net.
log4net.Ext.Json.Serializers.Newtonsoft is available via NuGet. To install it, run the following command in the Package Manager Console:
PM> Install-Package log4net.Ext.Json.Serializers.Newtonsoft
Please see the wiki for usage.