{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6b3c533faf32d3315f47dcab9d0420161bcc66c7db87081cb9ca1d48214afebe",
    "signature": "0x31fbf0034494f551adecd9199e9b1d0c42d5bcc200102e7e394fe682e33390ae6317cc3892f2ce236b811454297d2996da27a7503478b149bba5c6386b59b20b1b",
    "signer": "0x449418feaBA25A39aE410F0c64EB2473D7e608D3",
    "userId": "629879678"
  }
}