Spaces method and path for this operation:
post /s/{space_id}/api/timeline/_import
Refer to Spaces for more information.
Import Timelines.
POST /api/timeline/_import
curl \ --request POST 'https://localhost:5601/api/timeline/_import' \ --header "Authorization: $API_KEY" \ --header "Content-Type: application/json" \ --data '{"isImmutable":"true"}'