{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x6ed6561c8756ecdb96fdbfddfc79e1be42b99cde655ec30613d54ba396057fa6",
    "signature": "0xba574cb2cca33c33b4d13d717fba6170175e969ba0bdd3b4eb48a9aac79cc0352153165ac5c4e2ebb5a9f2ba5a92503e76874eeed3cf8da0d73f362e7d45aad41c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}