Create Asset REST API

For creating assets I am referring
https://developer.mautic.org/#create-asset
if storageLocation is local I need to ask what value I can add in file parameter?
I attach with this postman collection json.
Http request:
URI: POST https://tdtp.mautic.net/api/assets/new
Header:
Content-Type: application/json
Authorization: Bearer NGU4OTBmYWFiNDlmZjBhNmFiYjUzM2M2NmU5Yjc4ZjA2ZjE0OWY5OTQwZmFiNDNjNmU3MWEyODJiZmE1MWMzYw
Body:
{“title”: “postman1”, “category”: “consu”, “isPublished”: true, “storageLocation”: “local”,
“file”: “https://www.mautic.org/media/logos/b979aca7949a1c530b4c92e0af472a3a0ac93a7a.pdf
}

HTTP Response:
Status: 400 Bad Request
Body:
{
“errors”: [
{
“code”: 400,
“message”: “File https://www.mautic.org/media/logos/b979aca7949a1c530b4c92e0af472a3a0ac93a7a.pdf was not found in the asset directory.”,
“details”:
}
]
}

Please guide me how to create assets using rest api if storage location is local.