matrix-spec/api/client-server/v1/definitions/push_rule.json

{
  "title": "PushRule",
  "type": "object", 
  "properties": {
    "default": {
      "type": "boolean"
    }, 
    "enabled": {
      "type": "boolean"
    }, 
    "rule_id": {
      "type": "string"
    }, 
    "actions": {
      "items": {
        "type": ["object", "string"]
      }, 
      "type": "array"
    }
  }
}