Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwGMm73c+qhwHd6Mfr/KP+ZT3U0VtF0YtwYt7qIzcOPB2zaW2d4MwzWfU6Td… (844 chars)"
  }
}