curl --location --request GET 'http://jira.local:8080/jira/rest//rest/api/3/project//securitylevel'
{"levels":[{"self":"https://your-domain.atlassian.net/rest/api/3/securitylevel/100000","id":"100000","description":"Only the reporter and internal staff can see this issue.","name":"Reporter Only"},{"self":"https://your-domain.atlassian.net/rest/api/3/securitylevel/100001","id":"100001","description":"Only internal staff can see this issue.","name":"Staff Only"}]}