Create/Add change to a change request

{
  "payload": {
    "name": "beta-users",
    "description": "Users willing to help us test and build new features.",
    "project": "red-vista",
    "constraints": [
      {
        "contextName": "appName",
        "operator": "IN",
        "values": [
          "my-app",
          "my-other-app"
        ],
        "value": "my-app"
      }
    ]
  }
}

{
  "id": 3,
  "title": "Increasing gradual rollout",
  "environment": "development",
  "minApprovals": 2,
  "project": "unleash-project",
  "features": [
    {
      "name": "my-feature",
      "conflict": "Feature has been archived",
      "changes": [
        {
          "id": 33,
          "action": "updateStrategy",
          "conflict": "Strategy has been deleted",
          "payload": [
            {
              "id": "9c40958a-daac-400e-98fb-3bb438567008",
              "sortOrder": 1
            }
          ],
          "createdAt": "2023-07-31T13:22:03+02:00"
        }
      ],
      "defaultChange": {
        "action": "addStrategy",
        "payload": {
          "name": "flexibleRollout",
          "title": "",
          "disabled": false,
          "segments": [],
          "parameters": {
            "groupId": "my-feature",
            "rollout": "100",
            "stickiness": "default"
          },
          "constraints": [
            {
              "values": [
                "ux"
              ],
              "inverted": false,
              "operator": "STR_CONTAINS",
              "contextName": "userId",
              "caseInsensitive": false
            }
          ]
        }
      }
    }
  ],
  "segments": [
    {
      "id": 33,
      "action": "updateStrategy",
      "conflict": "Strategy has been deleted",
      "payload": [
        {
          "id": "9c40958a-daac-400e-98fb-3bb438567008",
          "sortOrder": 1
        }
      ],
      "createdAt": "2023-07-31T13:22:03+02:00",
      "name": "beta-users"
    }
  ],
  "approvals": [
    {
      "createdBy": {
        "id": 33,
        "username": "unleash-user"
      },
      "createdAt": "2022-12-12T12:13:24.218Z"
    }
  ],
  "rejections": [
    {
      "createdBy": {
        "id": 33,
        "username": "unleash-user"
      },
      "createdAt": "2022-12-12T12:13:24.218Z"
    }
  ],
  "comments": [
    {
      "id": 33,
      "text": "This is a comment",
      "createdBy": {
        "username": "unleash-user"
      },
      "createdAt": "2022-12-12T12:13:24.218Z"
    }
  ],
  "createdBy": {
    "username": "Hunter"
  },
  "createdAt": "2023-07-31T13:33:02Z",
  "stateTimestamps": {
    "Draft": "2023-07-31T13:33:02Z",
    "In review": "2023-08-01T10:15:30Z",
    "Approved": "2023-08-02T09:01:00Z"
  }
}