Write Pulse

{
  "public": {
    "Sr25519": "0x1a005e90a3e6a3dfe9288ab1201eb4b95be88b5ac1b18cd1f8a8eaefceef094a"
  },
  "pulses": [
    {
      "round": "25,570,133",
      "signature": "0x90bf0c42f50576763e255b1d7302499085b808708aa34133a48e64e6c4b768d1cb341ceefc11a14e904865bd86b11841",
      "randomness": "0xd8c419b6f4d94055d277b2abe7e679723ed80008502d191a6079be3481f4fd3f"
    }
  ],
  "blockNumber": "7,412,869"
}

{
  "Sr25519": "0x4c32675584c8a722c4d75b723acb361e2a01f9d2b09c2552369bd8a11775cb38f3e23db4a8296c301d09f47193f1e049de869ca7e5471e99070b54661e44d586"
}