Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwGLrU95zA9kG+KE7C3fs6hHtxg4Ml+zKVq9uA/GbwZixjH7LpU7ITDzrk+/… (844 chars)"
  }
}