Updates a specific column's definition within an audience. Supported fields: name, isFrozen, isHidden, and matchCriteria (for ZOOMINFO_MATCH columns only). Only fields present in the request body are modified. Changing matchCriteria alters how the column resolves ZoomInfo data; this affects all future enrichment runs for this column and is not reversible. Use this endpoint to rename a column, toggle its display state, or update its match configuration. Returns 200 with the updated column resource. Returns 400 if the update is invalid or the column is not editable (isEditable: false). Returns 404 if the audienceId or columnId does not exist.