Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwFPUdCEaezd/pQBL9YbQU9N1pAfHrbczmyCgHhWWEi4GUwcKNuSj6qqTi6X… (844 chars)"
  }
}