update_payload | object or string | Yes | - | Campaign fields to update as a JSON object using the official Reddit Ads v3 field names, sent as-is with raw microcurrency values. Only provided fields change. Common editable fields: name, configured_status, spend_cap, goal_value, bid_strategy, bid_type, bid_value, start_time, end_time, funding_instrument_id, and invoice_label. Example: {“name”: “New name”} |