Extrinsic 44748-1

{
  "heartbeat": {
    "blockNumber": 44746,
    "sessionIndex": 745,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x3c8b149081ea917fc496e3a28b62af48ff693a3cef03f863e36c8f335157680ed1f9e1962bc50cf7f6c0be5da08bc8bf2a71b59478208ef88219284a86f74586"
}