Write Pulse

{
  "public": {
    "Sr25519": "0x1c7997818cda64bb7b0eff4726b379c86667f8a10ddb396bbac1374fc0049b76"
  },
  "pulses": [
    {
      "round": "25,539,392",
      "signature": "0x87666209dfdb4700b5c712db322347f2de31a2fb9719615f22e71127c4e3c4982b2cab428bf146a9e469c479154340d9",
      "randomness": "0x149e0e865c3d7cb05a5dc31d2109ac696c6ce602e725c22891ceb602c5b833d9"
    }
  ],
  "blockNumber": "7,405,183"
}

{
  "Sr25519": "0x905222e03e70b7dcaeaaa64b4eae44bebf328604ea7210d4b089811b81395030e187f16c20842560a68ad94a1311c5077071d0747fe7d51b5b35a2b376786087"
}