{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1408740",
    "entityType": "User",
    "nonce": "0xc0001c64f77b95e55a38f8317241c50268d368910e266b9221acd384c51ee98e",
    "signature": "0xab2a2352e3d01d62c119493930b42a49fff4e3eafb12024f9c044a1858f115882fccafcbb11a1eae0c38b7ac784e209a037d5fc355feb13299fc323d91e2b0661c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}