{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xe7fcda5363770b98658c3612cf382584133e8c7fff8f73281e5a729e6b2c82b1",
    "signature": "0xbcd749ff331395d7b5524690fc94db7f41b24b997c80821cc22f27a41666d0040dac90b81fc15f5e6a3bed8dd59d97e2bdcf6e3c5a089c07958de7155ac6ae5a1b",
    "signer": "0x49aCa476D46A8DeCd8789B82a5E5c05d36dF4FdE",
    "userId": "305528134"
  }
}