Extrinsic 39684-1

{
  "heartbeat": {
    "blockNumber": 39682,
    "sessionIndex": 661,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xc632cda815ae039a9de3f579f55a2976a28a3f56b26bd242020163d00b1fd43d7dd8e665c11ab1f3e5578ba988c8554b33e18578cf7e12ac5d24f0c1bdcb958c"
}