Patchworks API

currently the Patchworks API endpoint to run a process flow and pass in the data requires the format 

{
  "payload": "some data" | "<some-xml></>" | "{\"a-stringified-json-payload\": true}"
}

However it's incredibly rare any other system will support this, instead this requirement should be removed so any input is instead passed to the flow and not just the value of the "payload" key.