Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwH98tIcvL54xM55GlMRqqjVW/GD1PKeV1Mu1/aR8rSFMWKSUlYhvr2p/Bz+… (844 chars)"
  }
}