Unable to receive the request to send an offer and return an answer.

[jdz123]

My scenario is that I say to Google Nest, "Open the front door camera."
My understanding is that Google Nest will automatically send an offer to cameraStreamSignalingUrl, which means once I process the parameters needed for onExecute:

json
{
"cameraStreamIceServers": "[{"urls": "stun:stun.l.partner.com:19302"},{"urls":"turn:192.158.29.39:3478?transport=udp","credential": "JZEOEt2V3Qb0y27GRntt2u2PAYA=","username": "28224511:1379330808"},{"urls": "turn:192.158.29.39:3478?transport=tcp","credential": "JZEOEt2V3Qb0y27GRntt2u2PAYA=","username": "28224511:1379330808"}]",
"cameraStreamSignalingUrl": "https://example.com/signaling/answer",
"cameraStreamOffer": "",
"cameraStreamProtocol": "webrtc"
}
The cameraStreamSignalingUrl is supposed to return an answer, and the Google Action will process this answer for Google Nest. However, I haven't seen any requests to cameraStreamSignalingUrl in either the logs or the cameraStreamSignalingUrl service logs.