Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwFr8SYFYmm+pUHXGWlxk/XBXZTSOxoVwllxgCK4vhD9CA+POtdkV2kUilJ+… (844 chars)"
  }
}