ServiceNow webhook payload truncation on long WhatsApp transcripts

Error: 413 Payload Too Large

Quick question about the webhook action in Architect. When routing WhatsApp conversation transcripts to ServiceNow via the REST API, messages exceeding 10KB are being rejected by the SNOW instance despite the Genesys Cloud side reporting success. Is there a documented way to chunk the payload or configure the webhook action to handle larger text bodies without manual string manipulation in the flow?