curl --request GET \
  --url https://api.wavix.com/v3/messages/sender_ids

{
  "items": [
    {
      "id": "3c7a5a90-43e0-43e0-b006-fdfea30c5a7c",
      "sender_id": "Wavix",
      "type": "numeric",
      "allowlisted_in": [
        "<string>"
      ],
      "usecase": "promo",
      "samples": [
        "sample"
      ]
    }
  ]
}