{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843421708",
    "entityType": "User",
    "nonce": "0x0b60780d5592e0771be5d9f8066f5f57576f056d003693e3007ed89e277c4b44",
    "signature": "0x1fd2436a6eb1e93d1d38b317bd7d73af2d2266c83f9d12e97c114ca9ae5390ca0e5cf8436c356b0b45de6a06af52c451c28112e0b846b5986809b7ee9be4323c1c",
    "signer": "0x1011297FAB27Cd869ba8313983bF4793AB784705",
    "userId": "540848139"
  }
}