How can a webhook identify USER_IDs?

Question

I'm developing a webhook, and I want it to be able to @mention specific users. The simple message format specifies using the format of <users/123456789012345> to @mention a specific users. Since this is not a bot, it is not processing an incoming message and cannot pull the from the sender field, as suggested in the note on the developer site linked above.

How can I get the USER_ID of a user on my domain?

Answer 1

I use this for find the USER_ID but if you have another way let me know

1. Right click on the user and select inspect

2. Search for data-member-id this is your USER_ID