{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "678146679",
    "entityType": "User",
    "nonce": "0x5abe1bb4a56d32242aafa17d9f3e1c6790e94668e6e094ac74ef40a7de9209a8",
    "signature": "0x838dbff1cfbd0e719144e705e2711e3827d66a44d87e1235c6f0c3f20523744745f4ec824d29642842debcd9b14dff3cc8c51e3c73f93ff020c02b8c1fb2fd001c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}