{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12",
    "entityType": "User",
    "nonce": "0x8ddde7366b1cfb410e182e8d5dba14ec6247b53fc467d454942a9f6e5b9e82f5",
    "signature": "0xb8c06dcabd3b171cf6d65eb633f4a79eacbe60fe9424c27257754d451a7f79677a0ece1a13df0409362fba3b4e0131a0aef5fd408e9ed853b31d776c5ef37d7a1b",
    "signer": "0x0Eb68d1ceacF37AbB0D48503E66b8fF2c06E2fdE",
    "userId": "747576419"
  }
}