curl --request POST \
  --url https://api.plazbot.com/api/agent/on-message-portal \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'x-workspace-id: <x-workspace-id>' \
  --data '
{
  "message": "<string>",
  "from": "<string>",
  "agentId": "<string>",
  "workspaceId": "<string>",
  "portalId": "<string>",
  "conversationId": "<string>"
}
'

{
  "success": true,
  "code": 123,
  "errorCode": "<string>",
  "message": "<string>",
  "data": {}
}