{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508186998",
    "entityType": "User",
    "nonce": "0x1628c3cdb242b54a565fb52d238b61ed3e95a17f5df471ad768560d1cb5edc5a",
    "signature": "0x80c06b9e072d843177a33c21f6e74d3a98ba7d4d47e673141aa49eabdcd038d60ce15720931209fbb1f34058e588957397da686e41389baca701c332061840861c",
    "signer": "0x4C057f8cAd0fd07c386B1D2fEb86B077e73DeD49",
    "userId": "254245"
  }
}