Merge pull request #5497 from BitGo/coin-3052-fix-apt-withdrawal-bugs

fix(sdk-coin-apt): read 64 bit little endian amount

Author: bhavidhingra

modules/sdk-coin-apt/src/lib/transaction/transferTransaction.ts

@@ -35,7 +35,11 @@ export class TransferTransaction extends Transaction {
     this._assetId = entryFunction.type_args[0].toString();
     this._recipient.address = entryFunction.args[0].toString();
     const amountBuffer = Buffer.from(entryFunction.args[1].bcsToBytes());
-    this._recipient.amount = amountBuffer.readBigUint64LE().toString();
+
+    const low = BigInt(amountBuffer.readUint32LE());
+    const high = BigInt(amountBuffer.readUint32LE(4));
+    const amount = (high << BigInt(32)) + low;
+    this._recipient.amount = amount.toString();
   }
 
   protected async buildRawTransaction(): Promise<void> {