{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "212611",
    "entityType": "User",
    "nonce": "0x277c0968245564e11ef3254e2d1711f96994b38cac89f3ccab2fec7aff737135",
    "signature": "0x39dbf0f569fed54540f81a970cb74b7d1ffc6d5fd52c4ad41e4b2bee34d4783f0021e289c4bad7b2b5bd0f31963f8a2a08b54d95d755f6fe8602ec3da90367ff1b",
    "signer": "0x1F5b327b06F23985a2eB7AcDEE087c4CE3F79860",
    "userId": "51270411"
  }
}