Add a tracking event

curl https://api.prod.goaugment.com/v2/loads/tracking \
  --request POST \
  --header 'Content-Type: application/json' \
  --header 'Authorization: Basic username:password' \
  --data '{
  "loadNumber": "1330559",
  "trackingEvent": {
    "eventSource": "MACROPOINT",
    "eventType": "INFO",
    "eventUtc": "2026-09-11T23:00:25Z",
    "city": "St Louis",
    "stateOrProvince": "MO",
    "latitude": 38.56045466,
    "longitude": -90.4000096,
    "nextEtaUtc": "2026-09-12T08:01:05Z",
    "notes": "Location update received. Locator: 6166485924, Source: Ping"
  }
}'