Create customer

curl --location 'https://app.fieldinsight.com/public-api//customers/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "business_name": "Northwind HVAC Services",
    "mobile_number": "+61 412 345 678",
    "email": "dispatch@hvac.example.com",
    "cc_email_list": [
        "accounts@hvac.example.com"
    ],
    "address": "12 Cooling Way, Brisbane QLD 4000",
    "external_id": "CUST-1001",
    "business_number": "12 345 678 901",
    "notes": "Preferred HVAC contractor for all sites.",
    "status": "67",
    "payment_term": "80",
    "business_entity": "66",
    "custom_fields": [
        {
            "field": "1",
            "value": "Premium"
        }
    ]
}'