{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10850",
    "entityType": "User",
    "nonce": "0x3ce278d7dc8329363d63a56d60779e7c33e81f11b1ebb96bd3a5b36c6b33d602",
    "signature": "0xfb1b40b343d66d5fdc77a1a81ac14b58dfd917b60b0204d671236eb3bc3a7d806f73f93c28e0ed55b1d7b5fc88925eb6707314d45488558fc94ea8e7a1ea3df31b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}