Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwCIH/n/Wa6eSN4OiALVp9H8YR3H6rgCJB4ZpPqp6+H6kFYHhqRTrd3Xvs3g… (844 chars)"
  }
}