Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwGD+YOiwgYA76Q+gGdIjBE1qYv0oA5LFCIMjdyr4ar/+3/3Psf6LCNjp6P5… (844 chars)"
  }
}