Extrinsic 39764-1

{
  "heartbeat": {
    "blockNumber": 39763,
    "sessionIndex": 662,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x26b3d6bcadf68a8583d0788b5be07c555afcf7eb16a63cc7c7dd12011704bf735df098f5dfe2233b0935716ca4ca3b73fb41b84c0bb917899582a598c3c59588"
}