{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "type": "object",
  "title": "Event",
  "description": "The basic set of fields all events must have.",
  "properties": {
    "event_id": {
      "type": "string",
      "description": "The globally unique event identifier."
    },
    "user_id": {
      "type": "string",
      "description": "Contains the fully-qualified ID of the user who *sent* this event."
    },
    "content": {
      "type": "object",
      "description": "The fields in this object will vary depending on the type of event. When interacting with the REST API, this is the HTTP body."
    },
    "type": {
      "type": "string",
      "description": "The type of event. This SHOULD be namespaced similar to Java package naming conventions e.g. 'com.example.subdomain.event.type'"
    }
  }
}