{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0x565fa6e7b1df792fa5a9a41c0999e67ab052f444f79e0dbc0ebb341fa128158e",
    "signature": "0x819cccca9f6502045da31d6b4fb66a8a9de232ef3286d1211930888b3a15974417d016e94a121282ab17d5586bb814d6abef6da5b505ff1b7a379346a491e02a1c",
    "signer": "0xfa0b7c5C31eBA7622AfE516eb7b8aD45EFB4BD28",
    "userId": "734513560"
  }
}