Ether js signedTypeData & metamask sig utils signedTypeData_v4 producing different signature

[PikachuCN]

Use metamask and ethers.js to generate inconsistent results. How can I resolve this?

const { signTypedData, SignTypedDataVersion } = require("@metamask/eth-sig-util");
const ethers = require("ethers");

const domain = {
// Defining the chain aka Rinkeby testnet or Ethereum Main Net
chainId: 56,
// Give a user friendly name to the specific contract you are signing for.
name: 'da.systems',
// // If name isn't enough add verifying contract to make sure you are establishing contracts with the proper entity
verifyingContract: '0x0000000000000000000000000000000020210722',
// // Just let's you know the latest version. Definitely make sure the field name is correct.
version: '1',
};

const types = {
"Transaction": [
{
"name": "DAS_MESSAGE",
"type": "string"
},
{
"name": "inputsCapacity",
"type": "string"
},
{
"name": "outputsCapacity",
"type": "string"
},
{
"name": "fee",
"type": "string"
},
{
"name": "action",
"type": "Action"
},
{
"name": "inputs",
"type": "Cell[]"
},
{
"name": "outputs",
"type": "Cell[]"
},
{
"name": "digest",
"type": "bytes32"
}
],
"Action": [
{
"name": "action",
"type": "string"
},
{
"name": "params",
"type": "string"
}
],
"Cell": [
{
"name": "capacity",
"type": "string"
},
{
"name": "lock",
"type": "string"
},
{
"name": "type",
"type": "string"
},
{
"name": "data",
"type": "string"
},
{
"name": "extraData",
"type": "string"
}
]
};

const types2 = {
"EIP712Domain": [
{
"name": "chainId",
"type": "uint256"
},
{
"name": "name",
"type": "string"
},
{
"name": "verifyingContract",
"type": "address"
},
{
"name": "version",
"type": "string"
}
],
"Action": [
{
"name": "action",
"type": "string"
},
{
"name": "params",
"type": "string"
}
],
"Cell": [
{
"name": "capacity",
"type": "string"
},
{
"name": "lock",
"type": "string"
},
{
"name": "type",
"type": "string"
},
{
"name": "data",
"type": "string"
},
{
"name": "extraData",
"type": "string"
}
],
"Transaction": [
{
"name": "DAS_MESSAGE",
"type": "string"
},
{
"name": "inputsCapacity",
"type": "string"
},
{
"name": "outputsCapacity",
"type": "string"
},
{
"name": "fee",
"type": "string"
},
{
"name": "action",
"type": "Action"
},
{
"name": "inputs",
"type": "Cell[]"
},
{
"name": "outputs",
"type": "Cell[]"
},
{
"name": "digest",
"type": "bytes32"
}
]
};

const privateKey = Buffer.from(
"9af0e6fcc9c1cd750d8bc98c27d2b32e4df86781e5ccefc1e11f75b8010ec442",
"hex"
);

const signature2 = signTypedData({
privateKey,
data: {
types: types2,
primaryType: "Transaction",
domain,
message: {
"DAS_MESSAGE": "TRANSFER FROM 0x491fcb31a14c8b8058d450fda54d1b7710c400da(4999.99 CKB) TO ckb1qyqxmyfg2a5w0jt0rn4qzu7gzead5t87405qs8cqan(1402.5 CKB), 0x491fcb31a14c8b8058d450fda54d1b7710c400da(3597.489973 CKB)",
"inputsCapacity": "4999.99 CKB",
"outputsCapacity": "4999.989973 CKB",
"fee": "0.000027 CKB",
"digest": "0xafd41c1971eef452eed5b2921c92e61fac152f6759235c95fd2f33a9e3be9440",
"action": {
"action": "transfer",
"params": "0x00"
},
"inputs": [],
"outputs": []
},
},
version: SignTypedDataVersion.V4,
});
console.log("Metamask sig utils generated signature", signature2);

const wallet = new ethers.Wallet(privateKey);

wallet
._signTypedData(domain, types, {
"DAS_MESSAGE": "TRANSFER FROM 0x491fcb31a14c8b8058d450fda54d1b7710c400da(4999.99 CKB) TO ckb1qyqxmyfg2a5w0jt0rn4qzu7gzead5t87405qs8cqan(1402.5 CKB), 0x491fcb31a14c8b8058d450fda54d1b7710c400da(3597.489973 CKB)",
"inputsCapacity": "4999.99 CKB",
"outputsCapacity": "4999.989973 CKB",
"fee": "0.000027 CKB",
"digest": "0xafd41c1971eef452eed5b2921c92e61fac152f6759235c95fd2f33a9e3be9440",
"action": {
"action": "transfer",
"params": "0x00"
},
"inputs": [],
"outputs": []
})
.then((signature) => {
console.log("Ether js _signTypedData", signature);
});