{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8fb144d60cfbeeea68eb0f7930b945f71609665a61d6da39da0443216007109c",
    "signature": "0x5f6a19d76b7c5a815624bd19c5aa9342ec742881173c4ad30d5e64db2ec037ff35f40377ce57edf492bfa5e2715e415b8331ca102769d21915d8071e7f0f5ba51c",
    "signer": "0xAf41d5deF73a190FeC613913d0F353d5327aabd6",
    "userId": "840006357"
  }
}