Planifier un message

POST /api/v1/messages/schedule

curl -X POST https://srv.msgflash.com/api/v1/messages/schedule \
  -H "x-api-key: msgf_live_your_api_key_here" \
  -H "Content-Type: application/json" \
  -d '{
    "instanceId": "YOUR_INSTANCE_ID",
    "to": "+33612345678",
    "templateId": "TEMPLATE_UUID",
    "contactId": "CONTACT_UUID",
    "variables": {
      "code": "PROMO10"
    },
    "scheduledAt": "2026-04-02T08:00:00.000Z"
  }'

{
  "data": {
    "id": "msg_uuid",
    "status": "queued",
    "body": "Bonjour Awa, votre code PROMO10 est prêt."
  }
}