{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf1ea42855dccb8ae8b1057532fce3b37ebbf04422c8bffa91e1329cb8f3fb18e",
    "signature": "0xe3b56bf567c61497f509c01b99a571919fa8ab99c27587f45aa582c23a882a6f24f079ae37dd36aeb7aaa8dc26d7b50bb4904f0e87c8b46bca548d89e6ccfb8b1c",
    "signer": "0x63d394E88B78FF653F4FCeB0AC74Cf5b064dfC34",
    "userId": "633246973"
  }
}