Extrinsic 74318-1

{
  "heartbeat": {
    "blockNumber": 74317,
    "sessionIndex": 1238,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xbaec3778d768c96015d118d2d5ee052e0219bbfb1d4a24af311842a8bb02224ed72e415f10b8a8dd5fd5db317ae96c31d8f1a9b0cf7c6eab4290773f1d67968e"
}