Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwCJuWsxQdA0Z8qRxKUx3PjpqyLa/HDe2Ccl3JjC93cfDVeJzZdVi8l+zSRz… (844 chars)"
  }
}