What do you mean ? O_O I'm confused. You mean like be on minds and receive stuff from nostr? Like minds as the main client? That's what I'm trying to figure out. Because minds has an upvote and downvote feature.
More likely there is some missing authentication token. I bet when you login to minds it generates a token and on each websocket request sends that over and it only accepts connections that have that token.
In others words it's probably reserved for minds users and so is basically useless and serves no purpose but for them to virtue signal.