Extrinsic 7208-1

{
  "heartbeat": {
    "blockNumber": 7206,
    "sessionIndex": 120,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xf028e275d9606045d39d94575766f00824cdcb5958d162172475f9b8c218b36d24366f996ad015c53f0c35ce43c07feac96309765c6a9c771cce4d9d8d218382"
}