{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "333763354",
    "entityType": "User",
    "nonce": "0x45e9b8c1be3b5384a78a87e24a7113f5c4a56de22e3b1eabfcf57fcedee83762",
    "signature": "0x791d697ac78f36e1ec0c8eaffcb83d904e6a5318d0c1a2d2160a546bfa9573567cbcceb10678922613d97d8a44f111c6df78b085f2a0568e92fd617740b87d5e1b",
    "signer": "0x1e9F846fdf1a89ba11e2D67fb4831B7E14ae8940",
    "userId": "617992566"
  }
}