Extrinsic 131923-1

{
  "heartbeat": {
    "blockNumber": 131922,
    "sessionIndex": 2198,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xdc3178ce0c8c65d7857ea0f480fe558b1d50b25365c5ee6f1cfadd057e59fc584ab2107d88c8e4f7d23383d0b8e0dd3a0904164d08df99dbc38cdaad9ee3bc8d"
}