Extrinsic 29502-2

{
  "heartbeat": {
    "blockNumber": 29500,
    "sessionIndex": 491,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x68bef11e5adfa3af490934e1b9b4d1173b092e6dfd62e35ddcf02fd84270561966889ce695067c1b520fa1ed3fa9253017ebae252525e122aa3381d60299578a"
}