curl --request GET \
  --url https://api.prelude.dev/v2/notify/management/subscriptions \
  --header 'Authorization: Bearer <token>'

{
  "configs": [
    {
      "id": "<string>",
      "name": "<string>",
      "callback_url": "<string>",
      "messages": {
        "help_message": "<string>",
        "stop_message": "<string>",
        "start_message": "<string>"
      },
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z",
      "mo_phone_numbers": [
        {
          "country_code": "US",
          "phone_number": "+15551234567"
        },
        {
          "country_code": "FR",
          "phone_number": "36184"
        }
      ]
    }
  ],
  "next_cursor": "<string>"
}