Extrinsic 11923-1

{
  "heartbeat": {
    "blockNumber": 11921,
    "sessionIndex": 198,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x38a7d4f56377acfa3118a4266a9208213750e5e1fb780e9c67b9a8d4a17fee09b8623fd5040e1df47106ef0b6943df22bb0a8ed1847bb8e28757713e08fe858b"
}