{
  "wallet_id": "YOUR_WALLET_ID",
  "source_asset_id": "BASE.BRETT-0x532f27101965dd16442E59d40670FaF5eBB142E4",
  "destination_asset_id": "BASE.USDC-0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "sell_amount": "1000",
  "slippage_bps": 30
}