{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "707265359",
    "entityType": "User",
    "nonce": "0xcd6d19d136e71e63ab048f48e5e0c39e7bc3037aefbbdfe8129e9403ce5c4633",
    "signature": "0xf6fb3d1e8d04592566523ff57c70cc3269afbd0ad7a41d81378486444b6b31c76ef1e06aa82eaa0c7d45a129775a3075e87bbb558a190519299e88454a62c6781b",
    "signer": "0xc4A500E17D812B285447720CCcb7F8eB148c91bd",
    "userId": "256479919"
  }
}