{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "535614224",
    "entityType": "User",
    "nonce": "0x66375aa7f7ea08df201558af03ac9c0acfae1bb5c8e81ed30fa0ab7edcc4cd22",
    "signature": "0x7fc60737e8e724c1d6b41c9dec78716363f89f1a48141574e8ccdfbc5296458c6ae5d5b9a9c3d2af018b6a652d886c96d8b2cb8bcc48df338ae11d04f2fe1acc1c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}