{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "402393",
    "entityType": "User",
    "nonce": "0x1115f4b98d6acba1643e9747a8c9438c446ccc06c1709786e989622ad43ad1eb",
    "signature": "0xcfcea009937b74beb8b647e8a51005933ee407f6a4225afa1da549bdbe8e35f551f0dd07b3b52822bb69cffd8a1b4e688a6cd10f727c837c2a99eb5775374c921c",
    "signer": "0xE534A1ad2e8E1f616866185D1efDf463B0eD38b4",
    "userId": "353625"
  }
}