Extrinsic 12682-1

{
  "heartbeat": {
    "blockNumber": 12680,
    "sessionIndex": 211,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xae9a3838470837698d85efd834577d80b5f81399586679641e0520997945c94238b968859dcef8159d8de19a96c701035723c784e36ae40c648b470455b69d85"
}