Extrinsic 7412-1

{
  "heartbeat": {
    "blockNumber": 7410,
    "sessionIndex": 123,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xda4a217ec095f9d53f90e36d1c5ee6a958c616a07e3f87003738be29a7ce731abd6da2cf9348a3d0bc19d86db9a3e29cd26db51776a5e9a0f706faecc50be98c"
}