curl --location --request POST 'http://jira.local:8080/jira/rest//rest/api/3/field' \
--header 'Content-Type: application/json' \
--data-raw '{
"description": "Custom field for picking groups",
"name": "New custom field",
"searcherKey": "com.atlassian.jira.plugin.system.customfieldtypes:grouppickersearcher",
"type": "com.atlassian.jira.plugin.system.customfieldtypes:grouppicker"
}'
{"id":"customfield_10101","key":"customfield_10101","name":"New custom field","untranslatedName":"New custom field","custom":true,"orderable":true,"navigable":true,"searchable":true,"clauseNames":["cf[10101]","New custom field"],"schema":{"type":"project","custom":"com.atlassian.jira.plugin.system.customfieldtypes:project","customId":10101}}