How can I recreate a custom object after delete?

I tried to run purge API but it returns this error. Is the object type mean object id? if not what object type I should put in the request?

{

“status”: “error”,

“message”: “Unable to infer object type from: p8013920_device”,

“correlationId”: “e78713cc-ead4-4491-a33d-505deabbf1a0”

}