可以在不使用结构的情况下在Golang的DynamoDB中运行PutItem吗？

package main

import (
    "fmt"
    "github.com/aws/aws-sdk-go/aws"
    "github.com/aws/aws-sdk-go/aws/session"
    "github.com/aws/aws-sdk-go/service/dynamodb"
)

func main() {
    // 创建DynamoDB客户端
    sess := session.Must(session.NewSessionWithOptions(session.Options{
        SharedConfigState: session.SharedConfigEnable,
    }))
    svc := dynamodb.New(sess)

    // 定义PutItem请求参数
    input := &dynamodb.PutItemInput{
        TableName: aws.String("YourTableName"),
        Item: map[string]*dynamodb.AttributeValue{
            "key1": {
                S: aws.String("value1"),
            },
            "key2": {
                N: aws.String("123"),
            },
        },
    }

    // 执行PutItem操作
    _, err := svc.PutItem(input)
    if err != nil {
        fmt.Println("Error:", err)
        return
    }

    fmt.Println("PutItem succeeded")
}