Extrinsic 45203-1

{
  "heartbeat": {
    "blockNumber": 45202,
    "sessionIndex": 753,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x6639b75abc3767f2757828e0e12c1629b0746b562db9bcb7b34b729112bdf540e71f3fc322f3ea32a33e35296246c65a8942f522fc2d86b0293e4cc55f4a258d"
}