{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "990836999",
    "entityType": "User",
    "nonce": "0x3340a1843e212367e8da3b6078ab976be00b0ae4afabcae91d83944774650894",
    "signature": "0x34f97fc0e5d6402be6fd27fe38b949364932a4efdbd73acf491e2d00429374de47b35aff5b728ea3df944f38adeb1ef8e427c5290aa15ce2d70a807004fc652e1b",
    "signer": "0x4a4E686a6442e2Fc2495a7d4363B25c583Ea3c3a",
    "userId": "34815"
  }
}