{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbfb8278ff0571e2b30276155bbd2b2e4894222a4252f27bcfd79bdaae6d3c8de",
    "signature": "0x75a4a4ee7c6cd9a9d238b0f7fac4ee278e6d180e4e4aafd19a32cff84863e3934bca6dee416ca8b44f1a3fb6b2eae15e2f0074f986becceb7f23fcc567b71f321c",
    "signer": "0x63d394E88B78FF653F4FCeB0AC74Cf5b064dfC34",
    "userId": "633246973"
  }
}