Extrinsic 23856-3

{
  "heartbeat": {
    "blockNumber": 23854,
    "sessionIndex": 397,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x00d02f1dac0ea221d7f033895fd8e826707c7a562b21d8e5f74813a2ca4b96375ee7410b094282b5b276763d13bff6286c6cd007c3498a1a66aba60a246f1c88"
}