{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf690e3115f943e3eb925f5a56fd51e75f8c8e546a104e555045eb6765bfa5950",
    "signature": "0x7caf766ed04005b13c3e506fbef5d0d476bd84f78b53af92bd50aec9563007855e6269f3b3706a1fda28a42d504b46661a806fc4700e3aa97bcffa5b8978d4521c",
    "signer": "0x38290db089551C21911A5b6b12516d61e33810F6",
    "userId": "960881362"
  }
}