{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "539948653",
    "entityType": "User",
    "nonce": "0x8a9aa09befbd6264d8c5f569d0100d8bab32be9bb2c9ac074616571f3b5df905",
    "signature": "0xa04281ed88bc24d967c16215f6be3fbfa1e526155bd4b1bc91a8b1e0e9c47a4b06fe4f64b8b27303edf23a738bca921c7a69d7aefc18f7f42d1c18944e97f0561c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}