Extrinsic 45444-1

{
  "heartbeat": {
    "blockNumber": 45442,
    "sessionIndex": 757,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x8a01e4d0b1b1ce5ccd1f2877e23b1b9de35ddc1d366d201e248b373f3444946aff443142756b41d82f7c164b9b270e2679837f0a2703e8a657bfc1ed4dcb2f8b"
}