{
  "$schema": "https://json-structure.org/draft/2020-12/schema",
  "name": "Principal",
  "type": "object",
  "properties": {
    "id": {
      "type": "string"
    },
    "displayName": {
      "type": "['string', 'null']"
    },
    "type": {
      "type": "string"
    },
    "tenantId": {
      "type": "['string', 'null']"
    }
  }
}