Write Pulse

{
  "public": {
    "Sr25519": "0x1c7997818cda64bb7b0eff4726b379c86667f8a10ddb396bbac1374fc0049b76"
  },
  "pulses": [
    {
      "round": "25,578,272",
      "signature": "0x9457e3ec5a3eeb5edac189eb8c6241a3fc5370dbf1f89edfdc6c2b48b7e7a746b4bdf2d3f032a824bb054760c9c61742",
      "randomness": "0x219ec3c5a6d5b761101ffab9ccea72d52c9061c138ebdb8745d32b6e8c92f354"
    }
  ],
  "blockNumber": "7,414,903"
}

{
  "Sr25519": "0x2ecb4ec344d176b285dfa118b6ff346f0d4b56976a42eeb14b55a6ba3478063af946bcade1e357d549ca66f3f0e73dd7f88f2407cd9fa3cb970d225940549187"
}