{
  "type": "object",
  "name": "Sender1",
  "properties": {
    "appType": {
      "type": "string"
    },
    "role": {
      "type": "string"
    },
    "subject": {
      "type": "string"
    }
  },
  "required": [
    "appType",
    "role",
    "subject"
  ],
  "$schema": "https://json-structure.org/draft/2020-12/schema"
}