Extrinsic 14738-1

{
  "heartbeat": {
    "blockNumber": 14736,
    "sessionIndex": 245,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x606fd57a29f1911d1e7e8ec7a8923127bcaa963e464760210a761fd0009bc41b906432f85e4b942598e95e932d8e0d9ebc0c7feb818fa52aeb05c1db855cc68b"
}