Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwB+Ci0kbX5uu+i6cjNndVGm/tYZjvTSWLLnBM9YYn/UfgycuD4a+uq+HBC5… (844 chars)"
  }
}