String payload = "{\"peewee_count\":5,\"pullet_count\":10,\"small_count\":8,\"medium_count\":15,\"large_count\":20,\"extra_large_count\":12,\"jumbo_count\":3,\"crack_count\":0\"}";

  // Start the POST request
  HTTPClient http;
  http.begin("http://localhost:8000/api/add");
  http.addHeader("Content-Type", "application/json");

  // Send the POST request
  int httpResponseCode = http.POST(payload);