Extrinsic 17784-1

{
  "heartbeat": {
    "blockNumber": 17782,
    "sessionIndex": 296,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x44f89722f8d4b762c8528d3e74d0e7af87fffcd2d1d51f64ccd32c534993b65aa88770452159ee5080a8cd48613c01cd22ebf25dfc6764e6fa12621d27ac3682"
}