curl -X POST 'https://api.goatpay.com.br/v1/subaccount/lock' \
  -H 'X-API-Key: gp_live_SUA_CHAVE' \
  -H 'Content-Type: application/json' \
  -d '{ "id": "clx_subconta", "mode": "withdraw_only" }'

{
  "success": true,
  "message": "Subconta bloqueada",
  "data": {
    "id": "clx_subconta",
    "name": "Loja Parceiro",
    "status": "ACTIVE",
    "lockMode": "WITHDRAW_ONLY",
    "balance": {
      "availablePadrao": 1500,
      "pendingPadrao": 0,
      "lockedPadrao": 0,
      "spendablePadrao": 1500
    }
  },
  "requestId": "req_abc"
}