{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "MembershipUserClassic",
  "description": "Classic identifiers of the user.",
  "type": "object",
  "properties": {
    "user_id": {
      "type": "integer",
      "format": "int32"
    }
  },
  "deprecated": true,
  "required": [
    "user_id"
  ]
}