curl --request GET \
  --url https://api.messages.dev/v1/lines \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "id": "<string>",
      "handle": "<string>",
      "label": "<string>",
      "service": "imessage",
      "is_active": true
    }
  ],
  "has_more": true,
  "next_cursor": "<string>",
  "request_id": "<string>"
}