{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "812347",
    "entityType": "User",
    "nonce": "0xf4e977525ee6b0695bacca4558d43948b0cb0ddcd4e859de3ffbf43f4f3a98db",
    "signature": "0xff3075ff58950102c53bad63bbbe044bef0c666d5631c3e8c23f80a37a26a0e56dd7b1b6251b6a80bd1d6ffff93839d2d45ae2c72c6fa5fd2f15380bf92910cf1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}