Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwB95mEgKU6jVL4a7VEIc+Ftt2mMiD/5UnDj0Ych5kHmuUfy6nO/xyCeIXIx… (844 chars)"
  }
}