Pickup Appointment update (given stop sequence as 1)

curl --location 'https://api.fourkites.com/load/update/dispatcher-api/async' \
--header 'Content-Type: application/json' \
--header 'apikey: testkey' \
--data '{
    "updates": [
        {
            "timeZone": "UTC",
            "billToCode": "Shipper unique id",
            "identifierKeys": [
                {
                    "identifier": "Load reference #1",
                    "rawIdentifier": "Carrier format - Load reference #1",
                    "identifierType": "Load reference identifier type in FourKites or Carrier company" //If FourKites standard used, then only reference would be searched using given identifierType otherwise skipped
                },
                {
                    "identifier": "Load reference #2",
                    "rawIdentifier": "Carrier format - Load reference #2",
                    "identifierType": "Load reference identifier type in FourKites or Carrier company"
                },
                {
                    "identifier": "Load reference #3",
                    "rawIdentifier": "Carrier format - Load reference #3",
                    "identifierType": "Load reference identifier type in FourKites or Carrier company"
                },
                {
                    "identifier": "Load reference #4",
                    "rawIdentifier": "Carrier format - Load reference #4",
                    "identifierType": "Load reference identifier type in FourKites or Carrier company"
                }
            ],
            "stopUpdate": {
                "earliestAppointmentTime": "YYYY-MM-DDTHH:MM:SSZ",
                "latestAppointmentTime": "YYYY-MM-DDTHH:MM:SSZ",
                "stopSequence": 1
            }
        }
    ]
}'