关于Required request body is missing问题

@PostMapping(value = "/payment/create")
    public CommonResult create(@RequestBody Payment payment){
        int result = paymentService.create(payment);
        log.info("*****插入结果："+result);

        if (result>0){
            return new CommonResult(200,"插入数据成功",result);
        }else {
            return new CommonResult(444,"插入数据失败",null);
        }
    }

当加了@RequestBody注解使用postman发送请求需要插入一个大括号，去掉注解不用加括号