Extrinsic 36761-1

{
  "heartbeat": {
    "blockNumber": 36759,
    "sessionIndex": 612,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xa8a77f87d66775349cfcfc44c79ef3a1231327e45a86c8249cf8317edff9882638c5b1101fbd8677cfb04bc9793b2642ef68c0e46d073ddb7209d7173f93b48c"
}