Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwAA9k+6MUUat9kGfF2AhIgEFGjKyfsOzqPj2WsoiC6Xvk5iy/cP6mziFaBg… (844 chars)"
  }
}