{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "367647512",
    "entityType": "User",
    "nonce": "0x764dd5954744e6d671abc820f646b1b5d467ca42c6b554535feec061f7cd15b8",
    "signature": "0xdcf2bcb893a76606dec48a0f6d0598b1623ef256663a9f0bbb02fb4fb5ddaee74922dd3ee243c48d3401b3b53caf543d750f57cd2209f2e67a32e5bbd7282aaa1c",
    "signer": "0x674FFC02F71bdD4bD3Ae60c618579EBDD541E397",
    "userId": "787787230"
  }
}