{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "951546743",
    "entityType": "User",
    "nonce": "0xf3fb5841bdd429bc085f0561bbb199e53faaede4c30a6db0198ff64bbe64aab8",
    "signature": "0xf74b07f8de0d55cc86f768c2fdb62132ea2d2f6fa14c88566a6a56ddddfa6027354c9be5c959db900ec18bbd7fc6fc68d41ff143f7b4349c2f002df0d6d32cef1b",
    "signer": "0x4a4E686a6442e2Fc2495a7d4363B25c583Ea3c3a",
    "userId": "34815"
  }
}