{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x6bda0a2b47a3a61ced56cf74ae1ac91c3079b93d527a1a0f8c2bd0438f5ab2ea",
    "signature": "0x7a34fb73999e33646c05d3c2ba9e2f3eb4ef0b1045c0698603a761b9804569047da42adc26f85d00a9dcdf13353cd8489bdca23c3f5caa0c2a8a6e240984afa71b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}