curl --location --request GET '/rest/api/3/workflowscheme/'
{"defaultWorkflow":"jira","description":"The description of the example workflow scheme.","draft":false,"id":101010,"issueTypeMappings":{"10000":"scrum workflow","10001":"builds workflow"},"name":"Example workflow scheme","self":"https://your-domain.atlassian.net/rest/api/3/workflowscheme/101010"}