Create a customer

curl --request POST \
  --url https://api.alguna.io/customers \
  --header 'Alguna-Version: <alguna-version>' \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "currency": "USD",
  "name": "Acme Corp",
  "aliases": [
    "<string>"
  ],
  "contacts": [
    {
      "email": "john@example.com",
      "is_primary": true,
      "email_preferences": [
        "<string>"
      ],
      "first_name": "John",
      "id": "<string>",
      "last_name": "Doe"
    }
  ]
}
'

{
  "created_at": "2026-04-01T10:00:00Z",
  "currency": "USD",
  "id": "cust_abc123",
  "name": "Acme Corp",
  "updated_at": "2026-04-01T12:30:00Z",
  "aliases": [
    "<string>"
  ],
  "billing_address": {
    "city": "San Francisco",
    "country": "USA",
    "line1": "123 Main St",
    "postal_code": "94105",
    "state": "CA",
    "line2": "Suite 100"
  },
  "contacts": [
    {
      "email": "john@example.com",
      "id": "cont_abc123",
      "is_primary": true,
      "email_preferences": [
        "<string>"
      ],
      "first_name": "John",
      "last_name": "Doe"
    }
  ]
}