Extrinsic 7929-1

{
  "heartbeat": {
    "blockNumber": 7927,
    "sessionIndex": 132,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x1815b327dd839b36520e70a8cfcbc29a2ca40e8d057fe51dc05623b981aa244b05f0f888f0791c1fbae36df6defe4cf435a642654666742432f0b169f08d958f"
}