Extrinsic 11721-1

{
  "heartbeat": {
    "blockNumber": 11720,
    "sessionIndex": 195,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x9e7ffdc653e83f77c6ba764792e51d26627aab7225733116892fd694060d8f3615a614a107650257b4443eb3c499289424d2088f7044133ee645e32573df1d8e"
}