Performance testing

I would like to do performance testing of our Cloud plugin using jmeter.
For this i am planning to put jira username, password in csv file and use it.
But with cloud i am not able to achieve login using jmeter. Has anyone achieved login on cloud jira using jmeter? It would be a great help if anybody share “how to do it using jmeter” or test plan?
Is there any way i can get the jwtToken to load test my plugin API?