How to create Jira issuetype= Test using API with JWT authorization

Here we are trying to create Jira issue-Test using Jira APIs but getting authorization error 403

POST: https://<<jira-url>>/rest/api/2/issue/

{
 "project": {
       "key": "testkey"
        },
        "summary": "Testissue",
        "description": "test via Api",
        "issuetype": {
            "name": "Test"
        }
      }