Issue with sponsored transactions

[chiefkeef88]

Hello. I am trying to create a sponsored transaction. First, I create the transaction itself, then I sign it with the gas sponsor and afterward with the sender. Next, I attempt to send the transaction to the blockchain, but I receive an error 32602: “InvalidParams.” However, when I create and sign this transaction without a sponsor, it executes without errors

const sponsorSigner = Ed25519Keypair.fromSecretKey(OPERATOR_PRIVATE_KEY);
    const tx = new Transaction();
    tx.setSender(userAddress);
    tx.moveCall({
      target: '0x0c54e6e6fea6496b37e85edcb2ae74bba50ad0148df78c666a3e724e0364a8e3::mint::mint',
      arguments: [
        tx.object('0xee8810083f969ca42ecb2f59bf75959ae6c4edeca874b793cf4fa1ab86bb16cd'),
        tx.pure.u64(1000000000), 
        tx.pure.address(userAddress), 
      ],
    });

    const kindBytes = await tx.build({ client, onlyTransactionKind: true });
    const sponsoredTx = Transaction.fromKind(kindBytes);
    
    sponsoredTx.setGasOwner(OPERATOR_ADDRESS);
    sponsoredTx.setGasPrice(750);
    sponsoredTx.setGasBudget(50000000);
    console.log(toBase64(kindBytes));
    const sponsorSignedTx = await sponsorSigner.signTransaction(kindBytes);
    const isVerifed = await sponsorSigner.getPublicKey().verifyTransaction(kindBytes, sponsorSignedTx.signature);
    console.log(isVerifed)
    const sponsoredTxJSON = await sponsoredTx.toJSON();
return {
      sponsoredTxJSON,
      sponsorSignature: sponsorSignedTx.signature,
      txBytes: sponsorSignedTx.bytes
    }

[chiefkeef88]

const tx = Transaction.from(txInfo.sponsorTx.sponsoredTxJSON);
        const targetAccount = targetWallet.accounts[0];
        const result = await targetWallet.features['sui:signTransaction'].signTransaction({ transaction: tx, chain: 'sui:mainnet', account: targetAccount});
        }
        const signatures = {
            sponsorSignature: txInfo.sponsorTx.sponsorSignature,
            signerSignature: result.signature,
            txBytes: txInfo.sponsorTx.txBytes
        }

[chiefkeef88]

const result = await client.executeTransactionBlock({
      transactionBlock: data.txBytes,
      signature: [data.sponsorSignature, data.signerSignature],
      options: { showEffects: true, showObjectChanges: true }
    });

[chiefkeef88]

In the wallet interface, the transaction appears correct