Please Note the following tag need to add in web api config file for Newtonsoft version upgrade.

we are using newtonsoft version 13 throught the pact application.
 	<dependentAssembly>
        <assemblyIdentity name="Newtonsoft.Json" culture="neutral" publicKeyToken="30ad4fe6b2a6aeed" />
        <!--<bindingRedirect oldVersion="0.0.0.0-11.0.0.0" newVersion="11.0.0.0" />-->
        <bindingRedirect oldVersion="0.0.0.0-11.0.0.0" newVersion="13.0.0.0" />
      </dependentAssembly>