Write Pulse

{
  "public": {
    "Sr25519": "0x1c7997818cda64bb7b0eff4726b379c86667f8a10ddb396bbac1374fc0049b76"
  },
  "pulses": [
    {
      "round": "25,552,189",
      "signature": "0xa859ec38b3720fdd5ca5b4a34b4847882c02f915c8ffd6278ebbb76b2925c80a8cddab0370ee60164eaaf2ba5ac7bd45",
      "randomness": "0xf1e147dc360653fbc80e85d9a48fd8d041f28b18588ee9ee57b986d9a4d60d9e"
    }
  ],
  "blockNumber": "7,408,383"
}

{
  "Sr25519": "0x6e202bede99722c3f2e25499f921a925051ce7a8a1801cb69d9af76135d9134e72ac2444482d25b8b661c217a913e8074cf21b120bdc5d579f1271ed071e3084"
}