curl --location --request GET 'http://jira.local:8080/jira/rest//rest/api/3/field//context/issuetypemapping'
{"maxResults":100,"startAt":0,"total":3,"isLast":true,"values":[{"contextId":"10001","issueTypeId":"10010"},{"contextId":"10001","issueTypeId":"10011"},{"contextId":"10002","isAnyIssueType":true}]}
contextId=10001&contextId=10002
.