Call a smart contract function using INFURA - node.js

Question

I can not understand how I can prepare the transaction, sign it and then send it using INFURA. I expect to get something wrong with the NodeJS code I posted. Can anyone kindly help me solve this problem?
Note: I am able to send the transaction on my smart contract, but the EVM reverts the execution.
Part of the Smart Contract (Solidity) (the function that I want to call):
function testFunction() public pure returns (string memory) {
return "testSuccess";
}
The function used in NodeJS:
const printRequestTransaction = async (gcodeHash) => {
log(`Preparing a transaction to register that the gcode has been sent`.yellow);
// With every new transaction send using a specific wallet address, it needed to increase a nonce which is tied to the sender wallet
let nonce = await web3.eth.getTransactionCount(web3.eth.defaultAccount);
// Fetch the current transaction gas prices from https://ethgasstation.info/
let gasPrices = await getCurrentGasPrices();
// Build a new transaction object and sign it locally
let details = {
"to": process.env.SMART_CONTRACT_ADDRESS,
//"value": web3.utils.toHex(web3.utils.toWei(amountToSend.toString(), 'ether')),
"gas": 210000,
"gasPrice": gasPrices.low * 1000000000, // converts the gwei price to wei
"nonce": nonce,
//"data": gcodeHash,
"function": "testFunction",
"chainId": 3 // EIP 155 chainId - mainnet: 1, ropsten: 3, rinkeby: 4 (https://ethereum.stackexchange.com/questions/17051/how-to-select-a-network-id-or-is-there-a-list-of-network-ids/17101#17101)
};
const transaction = new EthereumTx(details);
// This is where the transaction is authorized on Local PC behalf. The private key is what unlocks Local PC wallet.
transaction.sign(Buffer.from(process.env.WALLET_PRIVATE_KEY, 'hex'));
// Compress the transaction info down into a transportable object
const serializedTransaction = transaction.serialize();
// The Web3 library is able to automatically determine the "from" address based on Local PC private key
// Submit the raw transaction details to the provider configured above (INFURA)
const transactionHash = await web3.eth.sendSignedTransaction('0x' + serializedTransaction.toString('hex')).then(function (receipt) {
log(`result of the invokation: ${receipt})`.red);
return receipt.transactionHash;
}).catch((err) => {
log(`error occurred: ${err})`.red);
});
//const transactionHash = "exampleHash";
_transactionHash = transactionHash;
// Now it is known the transaction ID, so let's build the public Etherscan url where the transaction details can be viewed.
const url = `https://ropsten.etherscan.io/tx/${transactionHash}`;
log(url.cyan);
log(`Note: please allow for 30 seconds before transaction appears on Etherscan`.yellow)
};
Output:
error occurred: Error: Transaction has been reverted by the EVM:
{
"blockHash": "0x6205c1b8ce2fde3693e85843dce684ff11472e9df01fd850bc99e5771b3262d5",
"blockNumber": 5024524,
"contractAddress": null,
"cumulativeGasUsed": "0x50170f",
"from": "0x8882528C7104e146E0500203C353C09922575385",
"gasUsed": "0x5236",
"logs": [],
"logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
"status": "0x0",
"to": "0x1732089F6F6EeFA942871707c5AE1909B60774EB",
"transactionHash": "0xf748c9a6bdb19e776db4d8a9802d2bf5f8b588158da387029529249aca00a499",
"transactionIndex": 1
})
I would like to pay particular attention to the let details = {...}; object for which I am not very sure it is correct, I have a little confusion about this.