{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1385998271",
    "entityType": "Event",
    "nonce": "0x5c587727dfa5881cb34d8cfda52ab625728513e20606b538f37af706d6acdd4f",
    "signature": "0x3e73c076e954d4f3876506b6eaad8289cf8842f7f4dd72b7fcf206129404d8562bbbf9e6b4756fe4e52df7c19d82d7e38f452dbf57857ca9a84584edfc42f88e1b",
    "signer": "0xF66719AC0E8463f8c9660B4412B4972e1dB48183",
    "userId": "57021"
  }
}