{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "560200901",
    "entityType": "User",
    "nonce": "0x8e3577b03d355a3b929bbb63dba9e04098fd3bf2a3bddf8990b9cb0fecb70dc9",
    "signature": "0x304c96e420f87085ccc834c3bf086f0f60ebd7df73cedffa89120ed9f9a1aabe708c16771c326bc6d6caa68ceea6ce281104cde932bc429a28e65b31e49176241c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}