How to track back down the Caller IP Address to workstation?

Question

Hi,

I am looking for retrieving user information from the REST API event details generated.

I have uploaded a file directly via the azure portal and collected the event details as JSON object using azure Event Hubs. I have given the REST API event's JSON object and the image of how I uploaded the file via azure portal for reference.

Now in the REST API event's JSON object, I got the caller IP address. So using this caller IP address how to track back down to workstation?

And I need another clarification, why didn't I get any user information like Requestor UPN in the event details? Is there any way to get UPN in the event details generated?

Event details of REST API event:

{
  "time": "2023-01-19T06:43:07.2821147Z",
  "resourceId": "XXXXX",
  "category": "StorageWrite",
  "operationName": "CreateFile",
  "operationVersion": "2015-02-21",
  "schemaVersion": "1.0",
  "statusCode": 201,
  "statusText": "Success",
  "durationMs": 76,
  "callerIpAddress": "XXXXX",
  "correlationId": "XXXXX",
  "identity": {
    "type": "SAS",
    "tokenHash": "key1(XXXXX),SasSignature(XXXXX)"
  },
  "location": "East US",
  "properties": {
    "accountName": "testaccount",
    "userAgentHeader": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36",
    "referrerHeader": "XXXXX",
    "clientRequestId": "XXXXX",
    "etag": "XXXXX",
    "serviceType": "file",
    "objectKey": "/testaccount",
    "lastModifiedTime": "1/19/2023 6:43:07 AM",
    "metricResponseType": "Success",
    "serverLatencyMs": 66,
    "requestHeaderSize": 932,
    "responseHeaderSize": 330,
    "tlsVersion": "TLS 1.2",
    "accessTier": "TransactionOptimized"
  },
  "uri": "XXXXX",
  "protocol": "HTTPS",
  "resourceType": "Microsoft.Storage/storageAccounts/fileServices"
}