I'm sending a alert from tradingview to discord and need to add a role or tag a group in the alert @member but not working

this here work . {"content": "https://drive.google.com/file/d/1-BPTxxxq2ikpJxxxxxqPTT9kR_J-wfr9yk/view?usp=sharing\tMUSA: calls above 302 only if there if bullish volume, 20% sl","username": "BAME GT"}

need to tag a @members group buy not able to do it , I copy already the role ID but not working , this is what I have try

{"content": "https://drive.google.comxxx/file/d/1-BPTxxxq2ikpJR8eH1pqPTT9kR_J-wfr9yk/view?usp=sharing\tMUSA: "<@&821560504416993291>" 20% sl","username": "test bot"}