{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943748539",
    "entityType": "User",
    "nonce": "0xaca0aeef6a248ae65fff2810a9ff200e94e7c7c86cea38eabbed199c0a17d46e",
    "signature": "0x00a8675e919e2fbbf3c1322ebd64e48f2f9fda5e9bef7f24fee24fc31e4d477821ff07e95c73bfe956f72ddb53198369a8b60882ee439155b4f1a21faad3c2891c",
    "signer": "0x5501467AFaA7897fBBD65dE583c7E74577B92f74",
    "userId": "608591950"
  }
}