Extrinsic 6696-1

{
  "heartbeat": {
    "blockNumber": 6695,
    "sessionIndex": 111,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x66e96568f9a3b79d3c7907deb25a39b4601044272f4a57d09f1251f83d281f13291c26e0fccf2c77599f85b319257fd822a52b7e8092ab2a0c212d97b8b49b85"
}