Respond with photo to an invite or invite request without accepting it. :notificationId is the ID of the requesting notification.

In case the notification being replied to is an invite, the responseSlot refers to a response message from the the message collection. In case the notification is an invite request, it will refer to one from the requestResponse collection instead.'

curl -X POST "https://api.vrchat.cloud/api/1/invite/string/response/photo" \
  -F image="string" \
  -F data="{\n  \"responseSlot\": 11\n}"

{
  "id": "frq_00000000-0000-0000-0000-000000000000",
  "senderUserId": "usr_c1644b5b-3ca4-45b4-97c6-a2a0de70d469",
  "type": "friendRequest",
  "message": "",
  "details": "{}",
  "seen": false,
  "created_at": "2021-01-01T00:00:00.000Z"
}

{
  "error": {
    "message": "\"Response slot is out of bounds.\"",
    "status_code": 400
  }
}