curl -X GET 'https://api.goatpay.com.br/v1/customers/get/clx_customer' \
  -H 'X-API-Key: gp_live_SUA_CHAVE'

{
  "success": true,
  "message": "Cliente encontrado",
  "data": {
    "id": "clx_customer",
    "name": "Cliente Exemplo",
    "email": "cliente@email.com",
    "whatsapp": "11999999999",
    "phone": "11999999999",
    "document": "123.456.789-09",
    "city": "São Paulo",
    "state": "SP",
    "type": "PF",
    "status": "Ativo",
    "createdAt": "2026-07-01T12:00:00.000Z",
    "lastActivityAt": "2026-07-04T10:00:00.000Z",
    "transactions": 5,
    "volume": 499.5
  },
  "requestId": "req_abc"
}