Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwGJTQiYL/19fFzgmXsn5KkeYxpFdeUvDMelE5QA+i5z5lvbLVqMGT53l6Lz… (844 chars)"
  }
}