Retrieve a customer

curl --request GET \
  --url https://dev.sbx.imprint.co/v2/customers/{customer_id}

{
  "id": "9B5E1EE0-2E1C-46E7-81B9-3C3917204BE4",
  "email": "customer@example.com",
  "phone": "+14155552671",
  "statuses": {
    "Card Program Name": "OPEN"
  },
  "first_name": "John",
  "last_name": "Doe",
  "preferred_language": "en",
  "ssn4": "1234",
  "date_of_birth": {
    "year": 1990,
    "month": 1,
    "day": 1
  },
  "address": {
    "street_line1": "123 Main St",
    "street_line2": "Apt 4B",
    "city": "San Francisco",
    "state": "CA",
    "postal_code": "94105",
    "country": "USA"
  },
  "partner_customer_id": "PARTNER_USER_456",
  "metadata": {
    "preferred_language": "en"
  },
  "created_at": "2025-02-13T19:08:07.000Z",
  "updated_at": "2025-02-13T19:08:07.000Z"
}