{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "638999119",
    "entityType": "User",
    "nonce": "0x3fae050f0e21db346d599e332f5024e11f9689d60b3547e5daee454f29a0afc3",
    "signature": "0x613473a6d2ad2bfda034e2d29814f9774a77ea25c77c7cbd39cfaecb13c032097ce28fd9cc6062009949d8f3aae306960bcb21f440d545c52b59f120638130ee1b",
    "signer": "0x71114Ff581aA73d1F4b6429D7713914f10e8e90B",
    "userId": "894513731"
  }
}