{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1511688",
    "entityType": "User",
    "nonce": "0x45098a8e993d19b14611500d38a8d0965f209bbaa1cf236a57505da8e7ef0881",
    "signature": "0xdc7429d1cc5c87063e31d4880af6ba5a84c35d9a759b6287c90c4e440d41bc3023e18b9542455b4156248ff79537bf4fd6e5b2a482dd09e816b36c0e4f98d2d71c",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}