curl --request GET \
  --url https://app.tagadapay.com/api/public/v1/customers/{customerId} \
  --header 'Authorization: Bearer <token>'

{
  "id": "cus_123",
  "email": "john@example.com",
  "firstName": "John",
  "lastName": "Doe",
  "storeId": "store_123",
  "createdAt": "2024-03-20T10:30:00Z",
  "store": {
    "id": "store_123",
    "name": "My Store"
  },
  "paymentInstruments": [
    {
      "id": "pi_123",
      "type": "card",
      "isActive": true,
      "isDefault": false,
      "card": {
        "last4": "1234",
        "brand": "visa",
        "expYear": 2025,
        "expMonth": 12
      }
    }
  ],
  "device": {
    "browser": "Chrome",
    "os": "macOS"
  }
}