Check Polkadot's docs on the XCM precompile.

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.28;

import {VersionedXcmCodec} from "solidity-scale-codec/src/Xcm/VersionedXcm/VersionedXcmCodec.sol";
import {VersionedXcm, v5} from "solidity-scale-codec/src/Xcm/VersionedXcm/VersionedXcm.sol";
import {Xcm} from "solidity-scale-codec/src/Xcm/v5/Xcm/Xcm.sol";
import {XcmBuilder} from "solidity-scale-codec/src/Xcm/v5/Xcm/XcmBuilder.sol";
import {WithdrawAssetParams, BuyExecutionParams, DepositAssetParams} from "solidity-scale-codec/src/Xcm/v5/Instruction/Instruction.sol";
import {Asset} from "solidity-scale-codec/src/Xcm/v5/Asset/Asset.sol";
import {fromAsset} from "solidity-scale-codec/src/Xcm/v5/Assets/Assets.sol";
import {Location, parent} from "solidity-scale-codec/src/Xcm/v5/Location/Location.sol";
import {AssetId} from "solidity-scale-codec/src/Xcm/v5/AssetId/AssetId.sol";
import {fungible, FungibleParams} from "solidity-scale-codec/src/Xcm/v5/Fungibility/Fungibility.sol";
import {unlimited} from "solidity-scale-codec/src/Xcm/v5/WeightLimit/WeightLimit.sol";
import {AssetFilter, wild, WildParams} from "solidity-scale-codec/src/Xcm/v5/AssetFilter/AssetFilter.sol";
import {allOf, AllOfParams} from "solidity-scale-codec/src/Xcm/v5/WildAsset/WildAsset.sol";
import {WildFungibility} from "solidity-scale-codec/src/Xcm/v5/WildFungibility/WildFungibility.sol";
import {accountId32, AccountId32Params} from "solidity-scale-codec/src/Xcm/v5/Junction/Junction.sol";
import {fromJunction} from "solidity-scale-codec/src/Xcm/v5/Junctions/Junctions.sol";
import {polkadot} from "solidity-scale-codec/src/Xcm/v5/NetworkId/NetworkId.sol";
import {IXcm, XCM_PRECOMPILE_ADDRESS} from "./IXcm.sol";

contract XcmCaller {
    IXcm xcmPrecompile = IXcm(XCM_PRECOMPILE_ADDRESS);

    using XcmBuilder for Xcm;

    function callPrecompile() external {
        Asset memory asset = Asset({
            id: AssetId({location: parent()}),
            fungibility: fungible(FungibleParams({amount: 1200000000}))
        });

        AssetFilter memory filter = wild(
            WildParams({
                wildAsset: allOf(
                    AllOfParams({
                        id: AssetId({location: parent()}),
                        fun: WildFungibility.Fungible
                    })
                )
            })
        );

        Location memory beneficiary = Location({
            parents: 0,
            interior: fromJunction(
                accountId32(
                    AccountId32Params({
                        hasNetwork: false,
                        network: polkadot(),
                        id: hex"368e8759910dab756d344995f1d3c79374ca8f70066d3a709e48029f6bf0ee7e"
                    })
                )
            )
        });

        bytes memory encodedCall = VersionedXcmCodec.encode(
            v5(
                XcmBuilder
                    .create()
                    .withdrawAsset(
                        WithdrawAssetParams({assets: fromAsset(asset)})
                    )
                    .buyExecution(
                        BuyExecutionParams({
                            fees: asset,
                            weightLimit: unlimited()
                        })
                    )
                    .depositAsset(
                        DepositAssetParams({
                            assets: filter,
                            beneficiary: beneficiary
                        })
                    )
            )
        );

        xcmPrecompile.execute(
            encodedCall,
            IXcm.Weight({refTime: 1000000000, proofSize: 1000000000})
        );
    }
}