Extrinsic 9274-1

{
  "heartbeat": {
    "blockNumber": 9273,
    "sessionIndex": 154,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x6c90640bc9a0d03b1d7accd92582d7ab76cb680dd098235fc1712df2c8863b3a9caaade6aa202d6e2ab4d3a20addab131f32e4dd68e5b9e444e8d1772ca1a58d"
}