oauth 2.0 - How do I upload a file using the Box API using app credentials? -

i want user upload our server , have our server upload file specific folder in box using api. how can this? credentials should use?

curl https://app.box.com/api/oauth2/token \ -d 'grant_type=client_credentials&client_id=client_id&client_secret=secret' 

returns

{"access_token":"token","expires_in":3793,"restricted_to":[],"token_type":"bearer"}

curl https://upload.box.com/api/2.0/files/content   \ -h "authorization: bearer token" -x post  -f \  file=@package.json -f folder_id=3306197480 

returns

{"type":"error","status":404,"code":"not_found","context_info":{"errors":[{"reason":"invalid_parameter","name":"parent","message":"invalid value 'd_3306197480'. 'parent' value 'd_3306197480' not found"}]},"help_url":"http://developers.box.com/docs/#errors","message":"not found","request_id":"1157604954550c7c754b9c9"}

it sounds api returning 404 because user associated access token doesn't have permissions see folder you're uploading to. server need authenticate user collaborated on folder instead of authenticating user uploading file.