{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x5601c14a0a603d9720b154192e897f9d3789074846bc72a2eb637808158d3bfc",
    "signature": "0x6b1be8ba41f306f7e66bf43154f35d0698f1003ce56985af0530983cc6f079eb10aec58cd6cf3eff9559101096f2ff3d938ef83938d5c985cdfdbb56ae5bad861c",
    "signer": "0x71d0bffb1011D6Adc66839Dd71b9e177a5B5dc63",
    "userId": "722673517"
  }
}