{
  "error": {
    "code": "INSUFFICIENT_BALANCE",
    "message": "Insufficient balance for transaction",
    "details": {
      "required": "1.5 SOL",
      "available": "1.2 SOL"
    }
  }
}

async function retryRequest(fn, maxRetries = 3) {
  for (let i = 0; i < maxRetries; i++) {
    try {
      return await fn();
    } catch (error) {
      if (i === maxRetries - 1) throw error;
      await new Promise(r => setTimeout(r, 1000 * Math.pow(2, i)));
    }
  }
}