Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwEdzM7XMNwQdAayCv/pUShkQ8dWm7wuP8/Dob2EVGvYIHGPV2l/5+CRxZzk… (844 chars)"
  }
}