Delegation - to smart contract.

delegatable.ts

const recipient = "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
const initialBalance = await hre.ethers.provider.getBalance(recipient)

await signer0.sendTransaction({
    to: SmartAccount.address,
    value: ethers.utils.parseEther("1"),
})

// Create Delegation
const delegation = {
    delegate: SmartAccount2.address,
    authority: "0x0000000000000000000000000000000000000000000000000000000000000000",
    caveats: [],
    salt: 0,
}
const delSig = delegatableUtils.signTypedDataLocal(pk0, "Delegation", delegation)
const delegationSignaturePayload = [
    {
        contractAddress: ethers.constants.AddressZero,
        signature: delSig,
    },
];
const delegationSignaturePayloadTypes = SmartAccount.interface.getFunction("decodeAgnosticSignatures").outputs
if (!delegationSignaturePayloadTypes) throw new Error("No signature types found")

const encodedDelegationSignaturePayload = ethers.utils.defaultAbiCoder.encode(
    delegationSignaturePayloadTypes,
    [delegationSignaturePayload]
)

const signedDelegation = {
  signature: encodedDelegationSignaturePayload,
  message: delegation,
  signer: SmartAccount.address,
}

// Create UserOperation
const userOp = await fillUserOp(hre, {
    sender: SmartAccount.address,
    initCode: "0x",
    callData: await callData(hre, SmartAccount.address, recipient, 1, "0x"), // send 1 wei to vitalik
}, SmartAccount as Delegatable4337Account)


const hash = await entryPoint.getUserOpHash(userOp)
const sign = ecsign(Buffer.from(arrayify(hash)), Buffer.from(arrayify(pk1)));
const hexsign = "0x" + signatureToHexString(sign)

const signaturePayload = {
    signatures: [{
        contractAddress: ethers.constants.AddressZero,
        signature: hexsign,
    }],
    delegations: [
        signedDelegation,
    ],
}

const signaturePayloadTypes = SmartAccount.interface.getFunction("decodeSignature").outputs
if (!signaturePayloadTypes) throw new Error("No signature types found")

// console.log("______________________________________________________")
// console.log("signaturePayloadTypes", signaturePayloadTypes)
// console.log("______________________________________________________")
// console.log("signaturePayloadTypes json", JSON.stringify(signaturePayloadTypes))
// console.log("______________________________________________________")
// console.log("signaturePayloadTypes raw", signaturePayloadTypes[0].components)
// console.log("______________________________________________________")

const encodedSignaturePayload = ethers.utils.defaultAbiCoder.encode(
    signaturePayloadTypes,
    [signaturePayload]
)

userOp.signature = encodedSignaturePayload

// convert bytes to string
const string = ethers.utils.toUtf8String("0x0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000164141323320726576657274656420286f72204f4f472900000000000000000000")

const tx = await entryPoint.handleOps([userOp], await signer0.getAddress(), { gasLimit: 10000000 })
await tx.wait()