{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x374b053e993eb7178215acbe8e0bc3abab30acadde98ffde4a9ec58d7c148511",
    "signature": "0xe3c6ef534f4a8a98bdce269f49b9c29ce6df332997feb5ccad70bdd44b5b3a0b34636216ed962ad4002909a6de03b61292b0aea17c217991a5480117b2aac5081c",
    "signer": "0xf0FB6Ee8Ad56eA2e147d118ecaa4eB46cf03b448",
    "userId": "831640099"
  }
}