Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAADuAEAAAAGDQBjNFu2XxzgfNBrAU6XB5GPcbND7eMRZ11vgNCEIR9royo1xGdN0xUjYMii… (1,748 chars)"
  }
}