{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x8093b1f90ae024c7eadd15a2db195722fc7447be1be31fa0c4e46c3a3a661bb3",
    "signature": "0xca0c6b5b9985d5e6402886dfe6decea9e091d4df49830d0f43b993a21729a6f91697f9d8a647e8cf2835aaeb828af5ab7e325870c330d95848f6eeed236fdddc1b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}