Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwEOdAIFPsuEIk3+4D1az8wDpCgHdGKMdvK4x/XE5X7xowTwkG4DxHkKhzH/… (844 chars)"
  }
}