InternalServerError while adding attachment file to Asana task form PowerAutomate

Hello to everyone.

here the issue. I’m uploading an attachment to subtask via http request from PowerAutomate.
when request is running I’ve get “Internal server error”.

Here the request details.

Method: “POST”
URI: https://app.asana.com/api/1.0/attachments
Headers:
“Authorization”: “sanitized
“Accept”: " “application/json”
“Content-Type”: “multipart/form-data; boundary=—011000010111000001101001”

Body:
-----011000010111000001101001
Content-Disposition: form-data; name=“parent”

1sanitized4
-----011000010111000001101001
Content-Disposition: form-data; name=“file”; filename=“test154.pdf”
Content-Type: application/pdf
Content-Transfer-Encoding:base64

@{body(‘Get_file_content’)}
-----011000010111000001101001
Content-Disposition: form-data; name=“resource_subtype”

asana
-----011000010111000001101001–

Does someone know how to make it work?