Laravel API not accepting JSON Multi Part form Request

Hi All,

I have a laravel API that accepts form data as json. Form data is being put together by native android application (Java). This form is multi part data, so it sends string and also a file.

I believe the issue is with the way my JSON body is formatted as i was informed that the json field must be part of the form data, the field name is trans, but unsure of what that means.

I take my request and decode it before running a script that grabs each part of the form and prepares to write it to database

           $file = $request->file('sig');
           $transjson = $request->trans;
           $trans = collect(json_decode($transjson,true));

My Request

Content-Disposition: form-data; name="trans"
Content-Transfer-Encoding: binary
Content-Type: text/plain; charset=utf-8
Content-Length: 254
{"card":"12345","client":12","load_type":"test","site_location":"test","date":"2018-05-27T09:00:00"}
Content-Disposition: form-data; name="sig"; filename="test.png"
Content-Type: multipart/form-data
Content-Length: 3128

Response

{
"message": "{\"trans\":[\"The trans field is required.\"],\"sig\":[\"The sig field is required.\"]}"

Thanks!