NLog proper way to show username in asp.net - asp.net

Question

I'm using NLog and I'm getting the following:
[2021-10-06 11:52:51.1554] [INFO] [AccountController] admin Logged in. |user: notauth::
[2021-10-06 11:53:12.4143] [INFO] [UsersController] User info was changed for "Joe" |user: auth:ApplicationCookie:admin
[2021-10-06 11:53:19.8374] [INFO] [AccountController] admin Logged out. |user: auth:ApplicationCookie:admin
There are 2 issues:
Problem1: when I log who logged in, the user name is still not set.
Problem2: the username in the subsequent logs is shown with a prefix "auth:ApplicationCookie". I do not want that.
Here is my NLog.config
<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.nlog-project.org/schemas/NLog.xsd NLog.xsd"
autoReload="true"
throwExceptions="false"
internalLogLevel="Off" internalLogFile="c:\temp\nlog-internal.log">
<targets>
<target name="file" xsi:type="File" archiveFileName="${basedir}/Logs/Archive/nlog-{########}.log"
archiveNumbering = "Date" archiveDateFormat = "yyyyMMdd"
maxArchiveFiles="30" archiveEvery="Day"
fileName="${basedir}/Logs/nlog.log"
layout="[${longdate}] [${uppercase:${level}}] [${logger}] ${message} ${exception:format=tostring}|user: ${identity}"
concurrentWrites="false" keepFileOpen="false"/>
<target name="console" xsi:type="ColoredConsole"
layout="[${longdate}] [${uppercase:${level}}] [${logger:shortName=true}] ${message} ${exception:format=tostring}" />
</targets>
<rules>
<logger name="*" writeTo="console,file" />
</rules>
</nlog>
Any ideas?