{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "709259632",
    "entityType": "User",
    "nonce": "0x8579494fa2780451f4411ad1b6373f2d2b41e63aac97608cb4df28b5fb32a570",
    "signature": "0x386378b10abad4dcf748a6bc692ac2038678ad2a89cd90870280bc93c261bc0c01ada7ad7559f200ac4b82c678ed24887abc08d31ac6fb88d93f86c188e9d4251b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}