Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwGAU20+2JAQ5e5wQ1f1Lzjdu4qMBT0Sf3gM2AY44QmkcWfqVDLNgjJPUAeJ… (844 chars)"
  }
}