Get customer

curl --request GET \
  --url https://api.dualentry.com/public/v2/customers/{customer_id}/ \
  --header 'X-API-KEY: <api-key>'

{
  "id": 123,
  "address": "<string>",
  "country": "<string>",
  "name": "<string>",
  "unique_id": "<string>",
  "website": "<string>",
  "email": "<string>",
  "customer_type": "<string>",
  "is_active": true,
  "phone": "<string>",
  "record_status": "<string>",
  "is_taxable": true,
  "default_tax_code": "<string>",
  "tax_registration_number": "<string>",
  "custom_fields": [],
  "created_by": {
    "actor_type": "<string>",
    "email": "<string>",
    "first_name": "<string>",
    "last_name": "<string>",
    "timestamp": "2023-11-07T05:31:56Z"
  },
  "updated_by": {
    "actor_type": "<string>",
    "email": "<string>",
    "first_name": "<string>",
    "last_name": "<string>",
    "timestamp": "2023-11-07T05:31:56Z"
  },
  "approval_status": "<string>",
  "next_approvers": [
    {
      "id": 123,
      "first_name": "<string>",
      "last_name": "<string>",
      "email": "<string>",
      "full_name": "<string>",
      "avatar_url": "<string>"
    }
  ],
  "rejected_by": {
    "id": 123,
    "first_name": "<string>",
    "last_name": "<string>",
    "email": "<string>",
    "full_name": "<string>",
    "rejection_reason": "<string>"
  },
  "shipping_address": {
    "street": "<string>",
    "city": "<string>",
    "postal_code": "<string>",
    "state": "",
    "country": "",
    "second_line": "",
    "name": "<string>"
  }
}