Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwADfbXU8jZoQjHnvQkNCDggKwMHLF/7R3SVBE5zZAj+Sgn7Wv0x5RHxCdiv… (844 chars)"
  }
}