i can't upload documents with JSON API V8

Hello, everyone,
I’m trying to unpolad a document using the JSON API V8… but I always get the same error. The version of SuiteCrm is 7.11.4

The body of the call

{
  "data": {
    "type": "Notes",
    "attributes": {
      "name": "Test",
      "portal_flag": true,
      "filename": "testFile.txt",
      "filename_file": "U3VpdGVDUk0gaXMgdGhlIGJlc3Q="
    }
  }
}

The response:

{
    "errors": {
        "status": 400,
        "title": null,
        "detail": "Property filename_file in Note module is invalid"
    }
}

Try This

  "file": "U3VpdGVDUk0gaXMgdGhlIGJlc3Q="

Instead of this

  "filename_file": "U3VpdGVDUk0gaXMgdGhlIGJlc3Q="