Extrinsic 174686-1

{
  "heartbeat": {
    "blockNumber": 174685,
    "sessionIndex": 2911,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x90b1c2944f0826b2ac6a96f67e31681030f7e29ef931dae7fa4ad97476b74b7d5b5ee8f182ce6cfaef9445e1223a9d22b598fc13361514285d05e2307294cb87"
}