Error when uploading document to package

Hi! I'm getting error when uploading package with postman. Request: POST /api/packages/WZhzAq7Kg94hKye2vaF7X6PAW2U=/documents HTTP/1.1 Host: apps.e-signlive.ca Authorization: Basic MYAPIKEY Accept: text/html cache-control: no-cache Postman-Token: 259c64f4-5ffe-4fb0-a7ae-13448cafa44f Content-Disposition: form-data; name="payload"; filename="./upload/estimates/18/New.pdf Content-Disposition: form-data; name="name" test Content-Disposition: form-data; name="description" test Content-Disposition: form-data; name="id" test1 ------WebKitFormBoundary7MA4YWxkTrZu0gW-- Responce { "messageKey": "error.validation.invalidJson", "technical": "Unexpected character ('%' (code 37)): expected a valid value (number, String, array, object, 'true', 'false' or 'null')\n at [Source: (StringReader); line: 1, column: 2]", "message": "Invalid JSON.", "code": 400, "name": "Validation Error" }