What does 最早将于 mean in 最早将于本周二提起联邦诉讼? I don't understand 最早将于 in the following snippet:

在很多业内人士看来，诉讼将是字节跳动创始人张一鸣的唯一选择。而媒体消息称，在这场封杀中，TikTok发起了首次反击，最早将于本周二提起联邦诉讼，挑战特朗普在美国封禁该视频共享服务的行政命令。
风暴中的张一鸣：外界骂他软弱 员工赞他理性, 11 August 2020.

Clearly 最早 means &quot;earliest&quot;, but I don't understand 将于 at all.

[My translation:] According to many people in the industry, a lawsuit is ByteDance founder Zhang Yiming's only choice.  And media information states, under this shut-out, Tiktok launched the first counterattack: 最早将于 this Tuesday raised a federal lawsuit, challenging Trump's executive order, a USA-wide ban on the aforementioned video sharing service.

Question: What does 最早将于 mean in the above snippet?
(TikTok)最早将于本周二提起联邦诉讼.
(TikTok) will file a federal lawsuit as early as this Tuesday.

&quot;File a federal lawsuit&quot; means &quot;提起联邦诉讼&quot;, so &quot;最早将于本周二&quot; means &quot;will... as early as this Tuesday&quot;.
结构是: will do sth. as early as...
will: 将.
as early as... : 最早于, 后加时间.
do sth. : 即要做的那件事, 在本文中指提起联邦诉讼.