{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xf9baf6397e22eebfee94985150b83f9c968e77105c8c0bd9fb043034ffb315af",
    "signature": "0xa99ce316d9ed6c4699dd5849e9cc05fe2184d527f82916bed27cc17e6a1c865d3196461eea5a056bbac483b00a97a6a2edc55ab721a43caf9484d8bef3d1dde61b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}