curl --request POST \
  --url https://api.poligono.ai/v1/scheduler/follow-up/whatsapp \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "agent_id": "<string>",
  "channel_id": "<string>",
  "client_phone_numbers": [
    "<string>"
  ],
  "frequency": "<string>",
  "prompt": "<string>",
  "title": "<string>",
  "description": "<string>",
  "time_zone": "<string>"
}
'

{
  "agent_id": "<string>",
  "channel_id": "<string>",
  "channel_type": "Whatsapp",
  "client_phone_numbers": [
    "<string>"
  ],
  "created_at": 123,
  "created_by": "<string>",
  "frequency": "<string>",
  "organization_id": "<string>",
  "prompt": "<string>",
  "title": "<string>",
  "updated_at": 123,
  "description": "<string>",
  "id": "<string>",
  "time_zone": "<string>"
}