Need help in sharing JQL Query for fetching the Jira ticket logs to Splunk platform

we have done integration of Atlassian cloud with Splunk onpremse platform. we were able to fetch all the information apart from jira tickets information. we could not find respective rest api urls or JQL Query to fetch it. Need jira development team’s help in sharing JQL Query for fetching the Jira ticket logs to Splunk platform