Check HyperliquidObserver subscriptions

[DRadmir]

HyperliquidObserver: handle message error: AnyError(msg: "invalid type: string \"Already subscribed: {\\\"type\\\":\\\"candle\\\",\\\"interval\\\":\\\"30m\\\",\\\"coin\\\":\\\"UNI\\\"}\", expected unit variant RawSocketMessage::Unknown at line 1 column 107")

HyperliquidObserver: handle message error: AnyError(msg: "invalid type: string \"Already subscribed: {\\\"type\\\":\\\"activeAssetCtx\\\",\\\"coin\\\":\\\"UNI\\\"}\", expected unit variant RawSocketMessage::Unknown at line 1 column 94")