{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "895013760",
    "entityType": "User",
    "nonce": "0x2990c00ff20f7318cbdbe1ec39a676fbbfaa137aa7ac15bd778d032d7af817bd",
    "signature": "0x396622c750f8c35e5186af40bdacd39b49653bd4e824bca60f7c1e6cfdd171f92a4d08b2a4bd99352dfacb723e7b53aea2aa35fa3b68a6828a9c602b2f24b0521b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}