Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwGFbj1DVJ3ZkoEYKv5XrOtdMYE/qNvzjUUb0Ac0pSNIo14l5Y+wDMd7X4hy… (844 chars)"
  }
}