{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x51f016f5fea277b7e40cd1c45c00e9da41923368ac1bbb2a81b5963c6e5cef28",
    "signature": "0x490842893a700604e93e589fa2d361e804803d2e687fbca239afb1b356cad36e076b2491a060bed06918a86467321c26ce21675a96d6ede6a756ac79384c9bb41b",
    "signer": "0x9E37CE51928d7BE628DDD78bfc08103D9223b362",
    "userId": "466381606"
  }
}