Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwD+NIR0NvHikUOHxM8H5IzDt+ykbwH2vPRCGe+TW9SGYCfYaH6577yBOAD/… (844 chars)"
  }
}