Extrinsic 1715-1

{
  "heartbeat": {
    "blockNumber": 1713,
    "sessionIndex": 28,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x9a883f6ebc873cafc681af5f146bee0917f75ff105823c0d033548a4f4e15c031e65a3bac03cce3dbeee4c4b61cb9c7ba11844aecd53644c5bb92df588526884"
}