Extrinsic 121477-1

{
  "heartbeat": {
    "blockNumber": 121476,
    "sessionIndex": 2024,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x20b9b778ea7e7fb6d466809f8847432ab3c096fc147040ad5e681cc16c740750a020d73a5b13daa59cfd86b85f490073cce8f7290f2316086c76f5f55d859e82"
}