{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd7a175e9783416990af0a67ae51028499ac161da36bd97eff866ae3e26b26f32",
    "signature": "0xbec9429f057251ff3765a46c1de24536454d3e9f12dadec4feefb101297e48a60998db6899b7138bf70c0f8de3d2ec7a6cdd4f855264c7ac60a8495e53105ec61c",
    "signer": "0xfEf199273dc1B7112aA0D32cc0DbF797aC6EAfE5",
    "userId": "198179849"
  }
}