Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwGiIaD3FkhWs2bFl+/aYhtO2gNYu9s6UJlKdUA0bA7L3ymGCZ4v1SYT3GfQ… (844 chars)"
  }
}