{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4510",
    "entityType": "User",
    "nonce": "0x3ffda37f6839787c6fa9f96d5f84e40ea19942024e0d2235a8e133f8e9c8b751",
    "signature": "0x56fe790b04b05115b0cc0d5b56c06b1a6b95aaab59068d45a700f4a59ae99dac086c067211435c5fa1103ecf4a9739568ea986226b372e4a9916dbf9ca52d27f1b",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}