Extrinsic 12272-1

{
  "heartbeat": {
    "blockNumber": 12270,
    "sessionIndex": 204,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x1020abe7b9fbdeb80d2a641784b56a704d0e68b2088dba0b93a409efa2695b13a1aad45b08a5ee83fe2987711bbf35c6506e5268c98a6a1f815298cb353a828c"
}