The Alienist 1x02 Web-dlmux Ita Eng 5 1 Earine -

This is likely the "tag" or pseudonym for the individual or group responsible for the release. Episode 1x02: "A Fruitful Partnership"

The filename provides specific technical data about the file's origin and contents: The Alienist 1x02 WEB-DLMux Ita Eng 5 1 Earine

The second episode, titled originally aired on January 29, 2018. This is likely the "tag" or pseudonym for