Extrinsic 64533-1

{
  "heartbeat": {
    "blockNumber": 64531,
    "sessionIndex": 1075,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xf236beefde42ad81b8b7463bcc938b431f08e6bf4efe0fb548bad6d80e33ed752364aee8dc80c0aa7026b82cd4ae572c00b12c8db309c8280144a0b5e9dd7484"
}