如何获取微信公众号的关注链接？

<a href="https://mp.weixin.qq.com/mp/profile_ext?action=home&__biz=MzI0NTYwMjI1Mw==&scene=124#wechat_redirect" style="position: relative;">
                <div style="position: fixed; bottom: 60px;right: 20px; z-index: 999; background: #FFFFFF;border-radius: 20px; background-color: #62A8EA;  box-shadow: 0px 6px 10px 0px rgba(0,0,0,0.25);">
                    <div style="width: 35px;height: 35px;border-radius: 50%;overflow: hidden; margin: 7px 4px;">
                        <img src="images/follow.jpg" style="width: 100%;" />
                    </div>
                    <p style="text-align: center; font-size: 12px; color: #FFFFFF; height: 50px;">关注<br/>公众号</p>
                </div>
            </a>