{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "641892598",
    "entityType": "User",
    "nonce": "0xe29d2cda1a1e264a0464b295046a610a51dfb99b495d6c86690f08cfbcbfada0",
    "signature": "0x64286d96e419cb3a87e1b3b6efb87c1fb906c3ac3f2f88e52100afc5e6c2bd5969478b6e168ca0a457ed97c8287253f650bd6456233d00f2f9baba96ae4a179e1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}