Deployment Payload fields should be of type string.

[kishorenc]

I wanted to use the Deployment object's Payload field but it was an empty struct. It should be a string, as per the following snippet of an actual webhook delivery from Github:

{
  "deployment": {
    "url": "https://api.github.com/repos/<redacted>",
    "id": 91231524,
    "node_id": "MDEwOkRlcGyveW12bnr5MjMzNDUyNA==",
    "sha": "9ece132423201xcd8fefbf54e42d78e6f2c3d705",
    "ref": "9ece132423201xcd8fefbf54e42d78e6f2c3d705",
    "task": "deploy",
    "payload": "{\"branch\":\"throwaway_june18_2018\",\"prNumber\":226,\"prUrl\":\"https://api.github.com/repos/<redacted>\"}",
    "environment": "staging",
    "description": "Deploying <redacted>",
    "creator": {
    ...

I've been using this fork successfully for a week and the deployments have been fine.