The string length and character distribution suggest it could be a truncated or modified hash:
The use of the tilde ( ~ ) and a mix of alphanumeric characters is common in: 2ce384shlk~or1wek6zzr
If this appeared in a browser, right-click and select "Inspect" to see if the string is tied to a specific "cookie" or "local storage" key which would name its purpose (e.g., session_id ). The string length and character distribution suggest it