{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16416",
    "entityType": "User",
    "nonce": "0x6b46fb3d55e1a58eecf5f5f112588a6e3915730107e682616c9c730aadf7239c",
    "signature": "0x023b11948dcca0652297bb2b0dcbcece1470272112c80971bebd5099df9efdfe5b6ec8a29dce9672a7387c233871e6cd362a189f873dd62723be234f7af5685a1b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}