{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "199965",
    "entityType": "User",
    "nonce": "0x71e9bd13ad8efce4c30e47007235ad2c26b9a6c9b366eee3567e7a64d2478a77",
    "signature": "0x353c74ea7111f976a85f6f1b1486a35cf0f974ff481cb3a3b8b3bea4553b835507be58db6cf0f0f5c5b6e0c5ed4280d6cf9dc23d1e68718f1af816b457d1ac861b",
    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
  }
}