Extrinsic 943-1

{
  "heartbeat": {
    "blockNumber": 942,
    "sessionIndex": 15,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xf2a15325b7f328baf5ec4b3af64158682d0e07808f68729995e464c667a7f2001d20611847de63fe910d99cd7bade79069678bbdfed27aa4e8f7683fbb0edc87"
}