Extrinsic 527-1

{
  "heartbeat": {
    "blockNumber": 525,
    "sessionIndex": 8,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x4c22de943c28978a4095893acea264d82e2fcdc532f916e83cfeb2bdfb65ed07a0cc310961a6d035a000360b51850fd2f4aeb0e5c5586ea367b77e8f0f655c82"
}