{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3987",
    "entityType": "User",
    "nonce": "0x83464bc9fdf9a9dbe2e996a93afed8f10eea82c4aecb4725193b7dc3b74cfb90",
    "signature": "0x2cbc07615047ce996a2913e47dff9156f9c47b3a4aac3364272f1026e31f9919552334205dd84267ea83035fe800ab00e6eae9a130f6915fa46216bff0fcaa281b",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}