Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwH4ISz7hdkVx0eAiVEN8Ij8O3wyAFTRPE/SDkjMNn54+xjCWgLcMj3Cx3KY… (844 chars)"
  }
}