Log into Unravel UI and select the API page.

Expand POST /signIn and click Try it out.

Enter your username and password and click Execute.

Copy the value of the token field in the response body. Don't include the quotation marks.

Click Authorize at the top of the page.

In the Value text box, paste the token after the string JWT. Make sure there's a space between JWT and the token.

Click Authorize.