If its json then it shall already be extracted, but if not already extracted then you can extract them using below regex which will extract the values in fields called termField, msgField, ipField :
your query to return events
| rex field=_raw "Term\"\s*:\s*\"(?<termField>[^\"]+)\",\"Msg\"\s*:\s*\"(?<msgField>[^\"]+)\",\"Ip\"\s*:\s*\"(?<ipField>[^\"]+)\""
| table termField, msgField, ipField
You can change the names of these fields if you like by changing it in above regex and same regex can be used in field extractor.
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