Extrinsic 7946-1

{
  "heartbeat": {
    "blockNumber": 7944,
    "sessionIndex": 132,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x580f4d054cd212d0ff7832351d722f6903a91c8cda735a7aec55d5c7b44747367e4c93ac4632d51aadf745082bcaf3aca63265b75bbf0abf55d057ade305358d"
}