Borrow (Morpho Blue) event signature and topic0

import { createPublicClient, http, parseAbiItem } from "viem"
import { mainnet } from "viem/chains"

const client = createPublicClient({ chain: mainnet, transport: http() })

const logs = await client.getLogs({
  address: "0xbbbbbbbbbb9cc5e90e3b3af64bdaf62c37eeffcb",
  event: parseAbiItem("event Borrow(bytes32 indexed id, address caller, address indexed onBehalf, address indexed receiver, uint256 assets, uint256 shares)"),
  fromBlock: "latest",
})

for (const log of logs) console.log(log.args) // { id, caller, onBehalf, receiver, assets, shares }

import { Interface, JsonRpcProvider } from "ethers"

const provider = new JsonRpcProvider(process.env.RPC_URL)
const iface = new Interface(["event Borrow(bytes32 indexed id, address caller, address indexed onBehalf, address indexed receiver, uint256 assets, uint256 shares)"])

const logs = await provider.getLogs({
  address: "0xbbbbbbbbbb9cc5e90e3b3af64bdaf62c37eeffcb",
  topics: [iface.getEvent("Borrow")!.topicHash],
})

for (const log of logs) console.log(iface.parseLog(log)?.args)

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "eth_getLogs",
  "params": [
    {
      "address": "0xbbbbbbbbbb9cc5e90e3b3af64bdaf62c37eeffcb",
      "topics": [
        "0x570954540bed6b1304a87dfe815a5eda4a648f7097a16240dcd85c9b5fd42a43"
      ],
      "fromBlock": "latest"
    }
  ]
}

event Borrow(bytes32 indexed id, address caller, address indexed onBehalf, address indexed receiver, uint256 assets, uint256 shares);

// inside a function:
emit Borrow(id, caller, onBehalf, receiver, assets, shares);