Extrinsic 43761-1

{
  "heartbeat": {
    "blockNumber": 43760,
    "sessionIndex": 729,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x4e898e672a828e12b1fecae6fe122dd855918ab38354a362d51d38369d9710534506f0a6bd06f5beeb18fcfd8206f3e951d3e0d17401a0f3fe708eb00905598c"
}