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+Parsing serialised transaction:
+```
+  var buf = new Buffer(hexString, "hex");
+  tx.type = buf.readInt8(0);
+  tx.timestamp = buf.readUInt32LE(1);
+  tx.senderPublicKey = hexString.substring(10,10+33*2);
+  tx.amount = buf.readUInt32LE(38+21+64);
+  tx.fee = buf.readUInt32LE(38+21+64+8);
+  tx.vendorFieldHex = hexString.substring(76+42,76+42+128);
+  tx.recipientId = bs58check.encode(buf.slice(38,38+21));
+ ```