{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc9d4f3a6d6f57a5745c6da8532f0270e56274000518e1b9f9b476a202f2ad35b",
    "signature": "0x9f4ec9f5894a22483d3ae60b8b71b93fe25cfe349d963100a49b54d85b18e789326516aa73891c4443831c860b5fe4259376ad7a258b9da2006bf6ea60b9253a1b",
    "signer": "0x661Bc5cB13B1AAB08ee37c33282f87b7021025C6",
    "userId": "90451563"
  }
}