const txExec = await secretjs.tx.snip20.setViewingKey({
sender: secretjs.address,
contract_address: contractAddress,
msg: { set_viewing_key: { key: "hello" } },
});
const txQuery = await secretjs.query.snip20.getBalance({
address: secretjs.address,
contract: { address: contractAddress, codeHash: codeHash },
auth: { key: "hello" },
});