Extrinsic 64601-1

{
  "heartbeat": {
    "blockNumber": 64600,
    "sessionIndex": 1076,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x9cda58c886889a744b3aed53ddcde462c93709bb951a116e5ef8a2584c66764a33e87e761189f349845f4539cffd04edd969fce183b7a130adbd53f31aa45286"
}