Extrinsic 64239-1

{
  "heartbeat": {
    "blockNumber": 64238,
    "sessionIndex": 1070,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xd039f9b602824a93c4a4c1692373a2731f497361fbca791470a306e99b9f046ac3104a78655745ad9a90bcbec6afa78b15842ecb89cddb92233238c7b2c71d80"
}