{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0335b8f44d832d30ea5f09b190a2bbdf0534adb2dd04be5de5c7da1875e2ce1b",
    "signature": "0xdb477a43856cc5152534a04da42426e6a13c2e7685466f656cf9ef0fc065863d2b0dc1f092dcc6094174b7c182938b2de176c286b82af4d07449f0821d98b1e71b",
    "signer": "0x9794eD40Ef7C8C263E69ff16234e71c46Ee16936",
    "userId": "690148817"
  }
}