Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwCKe7a5peRMmb2b2GvZRE/tR598Wec8u/Uh72EVOs/rUWXL1+P3ul8C6Hkv… (844 chars)"
  }
}