{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456716469",
    "entityType": "User",
    "nonce": "0x800252753283a7ed4320549f2c3d684b8eb353de6f14051bced999e3eccbfa8d",
    "signature": "0x1dbc84a03869470883e59d4c38be23c3964a1df1f14aa1d8f414e43f21e0fcde7518c728f2f8f18f15789c5e00a14e18711800703a3fc414be73c89dd31e906a1c",
    "signer": "0xE18f37f193553F7bFB76f10C386b65159Ae304E0",
    "userId": "4510"
  }
}