{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6c6077fd08fb044491c998ac3b17faed2b2124b1b3f85e68af9ac9981a2915d9",
    "signature": "0xb98d48cafb3e99e521dc0beb7fa7267d13bfd09105e39dffd1062ff7f5fc8abd40f2a22a20585c03c714f93450df5cbacfba397343fe67712c4f6f4208a9f4ec1b",
    "signer": "0x2851e27BfeFEF74204921cD042C75FcBab0bF382",
    "userId": "431497296"
  }
}