{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x325baf3a6334f997f03eb1fc9c8587a3b57a65474a910e50bb2329fde9c8883c",
    "signature": "0xde0d39f1834eb2a8725974ba990df2e04f97d89fc09b8800979a57cdd5b433bb3377afc77fed075ca5ddf40e88df7b429032c1999ba012c378b3727e3a98ca991c",
    "signer": "0x9E0BdC4AA94bB8416a2A99864181fA36c2da6d2d",
    "userId": "400892340"
  }
}