Extrinsic 1716-1

{
  "heartbeat": {
    "blockNumber": 1715,
    "sessionIndex": 28,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xd837aa118b47327966c210056272fedc0d0195b32d11e9d229feb5eea1aa435a54bdf278063bcac98f21c8ffe4e60b6a8e70d8611d705b9d84fd134f2e84e78c"
}