Added isReversedOrder param

src/crypt/signOrder.ts

@@ -27,6 +27,7 @@ export const signOrder = async (
   usePersonalSign: boolean,
   signer: ethers.Signer,
   chainId: SupportedChainId,
+  isReversedOrder = false
 ) => {
   const nonce = Date.now();
   const expiration = nonce + DEFAULT_EXPIRATION;
@@ -56,6 +57,7 @@ export const signOrder = async (
     expiration,
     buySide: side === 'BUY' ? 1 : 0,
     isPersonalSign: usePersonalSign,
+    isReversedOrder
   };
 
   // eslint-disable-next-line @typescript-eslint/consistent-type-assertions