curl --request GET \
  --url 'https://api.hubapi.com/conversations/v3/custom-channels/?hapikey='

{
  "results": [
    {
      "capabilities": {},
      "createdAt": "2023-11-07T05:31:56Z",
      "id": "<string>",
      "name": "<string>",
      "channelAccountConnectionRedirectUrl": "<string>",
      "channelDescription": "<string>",
      "channelLogoUrl": "<string>",
      "webhookUrl": "<string>"
    }
  ],
  "total": 123,
  "paging": {
    "next": {
      "after": "<string>",
      "link": "<string>"
    }
  }
}