{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5944d1d607beb9666d5d2cd8331a74bac7ab4afa1ae66eb9e15a27ebee29f7fe",
    "signature": "0x00bc928d51232f41a652287df2975f8ac70680a15790941853054392bb25b3952da1ce4acaf46f356383215f59a96ca4c5f186309a5dc6bde402a7afcf33c2421b",
    "signer": "0xfEAfc71466E3F6a8dfa1458e7CF4A2b973Dd9f3e",
    "userId": "901626843"
  }
}