{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13660",
    "entityType": "User",
    "nonce": "0x7f2293c55f85c1f9a3f9c4a443c9e29e67bf5fcd87b67b35447caee79282daa3",
    "signature": "0xfe12887dfcb74bb556c45e8bc637a7ab5a9f737ac8b0ac40cf0f63f1324cbf402dff74fb3b75e5f575e74144ab10d0ac3666c5c88159e581d120e630972b5c3f1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}