如何在sequelize中编写这个原始Postgres查询

const { Sequelize, DataTypes } = require('sequelize');

// 创建Sequelize实例
const sequelize = new Sequelize('database', 'username', 'password', {
  host: 'localhost',
  dialect: 'postgres',
});

// 定义模型
const User = sequelize.define('User', {
  firstName: {
    type: DataTypes.STRING,
    allowNull: false
  },
  lastName: {
    type: DataTypes.STRING,
    allowNull: false
  }
});

// 执行原始查询
sequelize.query('SELECT * FROM "Users"', { type: Sequelize.QueryTypes.SELECT })
  .then(users => {
    console.log(users);
  })
  .catch(error => {
    console.error(error);
  });

const userId = 1;

sequelize.query('SELECT * FROM "Users" WHERE id = :userId', {
  type: Sequelize.QueryTypes.SELECT,
  replacements: { userId }
})
  .then(users => {
    console.log(users);
  })
  .catch(error => {
    console.error(error);
  });