{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3f318e60a57c592f77765f17a4ca998fc62c5fb51e4ee9fdfe9e1dbcc056c63f",
    "signature": "0x50516305c7748c893e1f3576ed305143669378a419198ba5cfc76e22346a02b2703eee572235e0fce879642c0585020498f29f4ff22df7d100e7315c29d0f84a1b",
    "signer": "0x918Fb31E9D0980668Cb1f9F24189E0D6335F998C",
    "userId": "949020948"
  }
}