Extrinsic 23372-1

{
  "heartbeat": {
    "blockNumber": 23370,
    "sessionIndex": 389,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x02170ac0e793e13da0c7b5250fbac8b64cc864b0efc12a2f694856cc2facc33da30dced3c373cfeacd0360c9f7a621248722d0bf6b35c4727d7fce2adb4b038c"
}