{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620449233",
    "entityType": "User",
    "nonce": "0x51363f537de02d6605bf27bf1b3568961e5bf40c1d3ee5b455ba7078350f7c09",
    "signature": "0x4d4d09e0f5a22eecaec2c2448a23628201daebfde705b8a5ee25152d45f2c36a6b8b54957ce3b6b8d376c30d74647606f8464f73a45a966865c1a4012d949a6e1b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}