{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x38fb66fa4a1b7166716ea12fcc35cf834e13c8cafdf5eaf1af8cc93a5d37650e",
    "signature": "0x99f75ad96d7a3a3a8389d8fcf90f0e7e08f6f627faee5d308e1d1becac6a9e9139b20c33847010e0c1a3749f28f8d3541a8ba44ea8618352490715e58ba33d801c",
    "signer": "0xD65B264D0C1042922d0A08A1a44FC67c7FEe6293",
    "userId": "747154787"
  }
}