{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4af5537d2110298565208ccbc6dcde51dc460909055af2ad9189981522f71018",
    "signature": "0x122baea563bae8732cb43da797cc22895ae75aee10cf60cfb2a2077123b160e24c670985a243919822f970b4a8d0eb6d493754a29c93679fe92c0f1aeb38d6c61c",
    "signer": "0xe258BF82776213b83616414e939534527f0d9C0e",
    "userId": "59346928"
  }
}