Multipart form with JSON returned as JSON string

[TristanSpeakEasy]

Would be great if when uploading JSON as one of the multipart form fields, if it has a Content-Type header application/json then in the returned form object the JSON is decoded instead of returning a JSON string for the field

current behaviour:

{
  "args": {}, 
  "data": "", 
  "files": {}, 
  "form": {
    "arr": "[{\"any\":\"\\\"any\\\"\",\"bool\":true,\"bytes\":\"bytes\",\"date\":\"2020-01-01\",\"dateTime\":\"2020-01-01T00:00:00.000001+00:00\",\"enum\":\"one\",\"float32\":1.1,\"int\":1,\"int32\":1,\"num\":1.1,\"str\":\"test\"},{\"any\":\"\\\"any\\\"\",\"bool\":true,\"bytes\":\"bytes\",\"date\":\"2020-01-01\",\"dateTime\":\"2020-01-01T00:00:00.000001+00:00\",\"enum\":\"one\",\"float32\":1.1,\"int\":1,\"int32\":1,\"num\":1.1,\"str\":\"test\"}]", 
    "bool": "true", 
    "int": "1", 
    "map": "{\"key\":{\"any\":\"\\\"any\\\"\",\"bool\":true,\"bytes\":\"bytes\",\"date\":\"2020-01-01\",\"dateTime\":\"2020-01-01T00:00:00.000001+00:00\",\"enum\":\"one\",\"float32\":1.1,\"int\":1,\"int32\":1,\"num\":1.1,\"str\":\"test\"}}", 
    "num": "1.1", 
    "obj": "{\"any\":\"\\\"any\\\"\",\"bool\":true,\"bytes\":\"bytes\",\"date\":\"2020-01-01\",\"dateTime\":\"2020-01-01T00:00:00.000001+00:00\",\"enum\":\"one\",\"float32\":1.1,\"int\":1,\"int32\":1,\"num\":1.1,\"str\":\"test\"}", 
    "str": "test"
  }, 
  "headers": {
    "Content-Length": "1665", 
    "Content-Type": "multipart/form-data; boundary=40909f5f5ba6d7c5a097a61c38f9b8600483f0f2", 
    "Host": "localhost:35123", 
    "User-Agent": "GuzzleHttp/7"
  }, 
  "json": null, 
  "method": "PUT", 
  "origin": "172.18.0.1", 
  "url": "http://localhost:35123/anything/requestBodies/put/multipart/deep"
}

expected:

{
  "args": {}, 
  "data": "", 
  "files": {}, 
  "form": {
    "arr": [{"any":"\"any\"","bool":true,"bytes":"bytes","date":"2020-01-01","dateTime":"2020-01-01T00:00:00.000001+00:00","enum":"one","float32":1.1,"int":1,"int32":1,"num":1.1,"str":"test"},{"any":"\"any\"","bool":true,"bytes":"bytes","date":"2020-01-01","dateTime":"2020-01-01T00:00:00.000001+00:00","enum":"one","float32":1.1,"int":1,"int32":1,"num":1.1,"str":"test"}], 
    "bool": "true", 
    "int": "1", 
    "map": {"key":{"any":"\"any\"","bool":true,"bytes":"bytes","date":"2020-01-01","dateTime":"2020-01-01T00:00:00.000001+00:00","enum":"one","float32":1.1,"int":1,"int32":1,"num":1.1,"str":"test"}}, 
    "num": "1.1", 
    "obj": {"any":"\"any\"","bool":true,"bytes":"bytes","date":"2020-01-01","dateTime":"2020-01-01T00:00:00.000001+00:00","enum":"one","float32":1.1,"int":1,"int32":1,"num":1.1,"str":"test"}, 
    "str": "test"
  }, 
  "headers": {
    "Content-Length": "1665", 
    "Content-Type": "multipart/form-data; boundary=40909f5f5ba6d7c5a097a61c38f9b8600483f0f2", 
    "Host": "localhost:35123", 
    "User-Agent": "GuzzleHttp/7"
  }, 
  "json": null, 
  "method": "PUT", 
  "origin": "172.18.0.1", 
  "url": "http://localhost:35123/anything/requestBodies/put/multipart/deep"
}