Guide Events Primary Key

Is there a set of keys to uniquely identify my guide events records ie. (Primary Key for guide events records)

I have more than 12000 records for "guide_events", but at the destination side I am missing out on rows because of Primary Key selection, currently I am having the following Primary Key, however it does not identify each record uniquely.

['account_id', 'visitor_id', 'server_name', 'remote_ip']

Here is the sample response we get from `guide_events` endpoint:

{
    "accountIds": [
        "ACC-TEST-ID"
    ],
    "browserTime": 1607122240407,
    "country": "US",
    "elementPath": "BODY",
    "eventId": "",
    "type": "guideSeen",
    "guideId": "hsd5h2s-pfw72tESt55n6j8L34",
    "guideSeenReason": "auto",
    "guideStepId": "D31V104QGRfraTeSt3bQRtyTeST",
    "latitude": 19.955524,
    "loadTime": 0,
    "longitude": -85.123272,
    "oldVisitorId": "reason:auto",
    "region": "ab",
    "remoteIp": "bbb.aaa.aaa.bbb",
    "serverName": "test.com",
    "title": "ANd7wdvHVE8VbbjbVHevKENbdfebdTESTGebdefeABHEBh72y75HVH262JBDtestDebfjebfeuAT6r5fJBJVHCGjfbehvfhe8yy7575879767BTesTHVCbGCGCGVhbgtt7y8gjbdw6FDtEsT6Yvydey",
    "url": "http://test.com/",
    "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X) AppleWebKit/123.45 (KHTML, like Test) Chrome/99.0.9999.99 Safari/123.45",
    "visitorId": "_PENDO_T_AJTEst11q20",
    "appId": -635363,
    "accountId": "ACC-TEST-ID"
}

Does anyone know what `guideStepId` in the response suggests?

Thank you.