diff --git a/server/web3service/controllers/claim_box.js b/server/web3service/controllers/claim_box.js
index 5c29e1c..074a0e3 100644
--- a/server/web3service/controllers/claim_box.js
+++ b/server/web3service/controllers/claim_box.js
@@ -4,13 +4,13 @@ const sigUtil = require('@metamask/eth-sig-util');
 const app = require('j7/app');
 const utils = require('j7/utils');
 const bcutils = require('j7/bcutils');
-const bc = require('../blockchain');
 const metaFactory = require('../metadata/factory');
 
 async function claim(session) {
   try {
     const account = session.request('account');
     const netId = session.request('net_id');
+    const bc = null;
 
     const nftAddress = bc.getNftAddress(bcutils.CLAIM_BOX_TYPE);
 
@@ -37,22 +37,15 @@ async function claim(session) {
         ['trans_id', transId]
       ]);
     const nonce = transId;
-    const tokenIds = [tokenId];
-    utils.arrayToStrings(tokenIds);
-    let signStr = await bc.web3.utils.soliditySha3
-    (
+    const signature = await bc.soliditySha3Sign(
       account,
       nftAddress,
       nowTime,
-      nonce,
-      ...tokenIds
+      nonce
     );
-    let signature = await bc.web3.eth.sign(signStr, userAddress);
-    signature = signature.replace(/00$/, "1b").replace(/01$/, "1c");
 
     const rspParams = [
       nftAddress,
-      utils.jsonEncode(tokenIds),
       nowTime,
       nonce,
       signature
diff --git a/server/web3service/services/blockchain.js b/server/web3service/services/blockchain.js
index 1efb715..7da61eb 100644
--- a/server/web3service/services/blockchain.js
+++ b/server/web3service/services/blockchain.js
@@ -34,7 +34,7 @@ class BlockChain extends BaseService {
   }
 
   async soliditySha3Sign(...args) {
-    let signStr = await this.#bc.web3.utils.soliditySha3(...args);
+    const signStr = await this.#bc.web3.utils.soliditySha3(...args);
     let signature = await this.#bc.web3.eth.sign(signStr, this.getUserAddress());
     signature = signature.replace(/00$/, "1b").replace(/01$/, "1c");
     return signature;