{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6af12e6918bb853686ab83560f82d79830ba1a77dd0f52eebd6075b39423c6bd",
    "signature": "0xdd6ece5d5e7ed422f3fe6b929cf34e0b11933254c7979fbc04a2ddb8e7c6a7b8702b624d8a910cad5e5d8635494dbb1480ca44b4d60bf5ef3390d34b766336621b",
    "signer": "0xeDE6cf2daA6681F46907C46194f3142e0C9ba4c0",
    "userId": "864530018"
  }
}