curl --request POST \
  --url https://api.poligono.ai/v1/channels/whatsapp \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "access_token": "<string>",
  "agent_id": "<string>",
  "number_id": "<string>"
}
'

{
  "data": {
    "created_at": 123,
    "status": "active",
    "updated_at": 123,
    "agent_id": "<string>",
    "created_by": "<string>",
    "id": "<string>",
    "number_id": "<string>",
    "organization_id": "<string>",
    "type": "<string>",
    "verification_token": "<string>"
  }
}