curl --request POST \
  --url https://app.sphinxhq.com/api/customers/ \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "external_id": "cust-123",
  "full_name": "John Smith",
  "customer_type": "INDIVIDUAL",
  "input_details": {
    "aliases": [
      "Johnny",
      "Jonno"
    ],
    "dob": "1990-01-01",
    "email": "john@example.com",
    "address": {
      "street": "123 Main St",
      "city": "New York",
      "country": "USA"
    }
  }
}
'

{
  "external_id": "cust-123",
  "full_name": "John Smith",
  "customer_type": "INDIVIDUAL",
  "input_details": {
    "aliases": [
      "Johnny",
      "Jonno"
    ],
    "dob": "1990-01-01",
    "email": "john@example.com",
    "address": {
      "street": "123 Main St",
      "city": "New York",
      "country": "USA"
    }
  }
}