如何在使用near-js登录时请求完全访问权限

pragma solidity ^0.8.0;

contract FullAccessControl {
    mapping(address => bool) public admins;

    constructor() {
        admins[msg.sender] = true;
    }

    function grantFullAccess(address user) public {
        require(admins[msg.sender], "Only admin can grant full access");
        admins[user] = true;
    }

    modifier onlyAdmin() {
        require(admins[msg.sender], "Only admin can call this function");
        _;
    }
}

const nearlib = require('nearlib');
const fs = require('fs');

// 配置 NEAR 连接
const config = JSON.parse(fs.readFileSync('./config.json', 'utf8'));
const near = await nearlib.connect(config);

// 加载合约
const contractId = 'your-contract-id';
const contract = await near.loadContract(contractId, {
    viewMethods: ['isAdmin'],
    changeMethods: ['grantFullAccess']
});

// 请求完全访问权限
const userAccount = 'your-user-account';
await contract.grantFullAccess({ account_id: userAccount });