{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "503680101",
    "entityType": "User",
    "nonce": "0x86e599f49661af21eab48a4012afccbe1707486072a5ee709ac485bf7f068101",
    "signature": "0xb3c31b24948f085a8ddc40dc77f1ef857380dcfff8d3ba877d95d54eddb87f4370e9a590dc8093d812e9458b6732f607cfe5eadab84598afa8baa78ee65dacb61c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}