{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "464100900",
    "entityType": "User",
    "nonce": "0x7f58cb7c5d2354ed261141305cb534fd58fb47938c9d323594f1f9e537210580",
    "signature": "0xda8b72bd8bdb2b15f240d32e0cb29de211feaff2252235429b9487e6e39c5fd1481a57ad29e849efc5a551623c4c433a8bd71eeb6aea6837294589b6e31671191c",
    "signer": "0x9b6bD4505e2bCfA88acc8680F463a96DAddf1d0d",
    "userId": "213208842"
  }
}