Answer by chaimp for Passing a URL with brackets to curl

Add -g to your command:

-g, --globoff      This option switches off the "URL globbing parser". When you set this option, you can      specify URLs that contain the letters {}[] without having curl itself interpret them.      Note that these letters are not normal legal URL contents but they should be encoded      according to the URI standard.      Example:       curl -g "https://example.com/{[]}}}}"

curl.se/docs/manpage.html#-g