What is the proper request body format for saved_objects/_bulk_delete API?

I'm unable to use the bulk_delete API on 8.8.2 neither using Kibana Console or curl. Can you give me a working example?

curl -X POST "http://localhost:5601/api/saved_objects/_bulk_delete" -H 'kbn-xsrf: true' -H 'Content-Type: application/json' -d'
[
  {
    "type": "url",
    "id": "6995dc78e1239361610f02309ee9a5fe",
  },
  {
    "type": "dashboard",
    "id": "my-dashboard",
  }
]
'

gives me {"statusCode":400,"error":"Bad Request","message":"Invalid request payload JSON format"}

Hello,

This is our documentation for it - Bulk delete object API | Kibana Guide [8.11] | Elastic

Could you please recheck your command and see what happens if you execute it in dev console?

Thanks,
Bhavya