Extrinsic 3078-1

{
  "heartbeat": {
    "blockNumber": 3076,
    "sessionIndex": 51,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xbed0c2dc993587985a2d2cb6bc8f0e246ebf021f40594d25a8ae0f0a5578163322a716bf6e11fe741ea405335d1219935a24c8bfe1e05b4af0d4b78be14e2b83"
}