How can I embed an already serialized object in another?

[wuyuanyi135]

Hi, I am trying to achieve something like:

  json internal_obj;
  internal_obj["time"] = {{"from", 1},
                          {"to",   100}};
// The internal buffer is stored somewhere
  std::vector<uint8_t> internal_buffer;
  json::to_cbor(internal_obj, internal_buffer);

// Later, the internal buffer will be loaded and embedded as-is into the ext_obj and send.
// I want to avoid the overhead of repeating the decode/encode process.
  json ext_obj;
  ext_obj["logging"] = json::binary(internal_buffer);
  std::vector<uint8_t> out{};
  json::to_cbor(ext_obj, out);

  std::for_each(out.begin(), out.end(),[](const auto& c){
    fmt::print("{:02x}", c);
  });

I could embed the serialized object as a binary part in cbor (or string part in JSON). However, to retrieve the value, the receiver must recursively decode the binary inside it. Is there any recommended way so that I can embed the serialized object as-is, and modify its type for dumping?