{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "406225571",
    "entityType": "User",
    "nonce": "0xdc5f97e580e2a2ebf3f8efefe086a29e235e0aacbf992edb2e1db40488b38fdc",
    "signature": "0xb95b3e111b80c0f0073572d02541d42d003b6565dfa268090e0e483af55755b354f34b4911fda4d2283da2c04c53419cf34ed4922d5618c8dcc9f2a43a9cfecb1c",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}