{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "513193189",
    "entityType": "User",
    "nonce": "0x893f16645108ff04a7c559ced359ba7d7285ed454801c83a345c7fb24a614d24",
    "signature": "0xd65d48326782c675d2c04e174080b93c904915c249b7280754d6983cdd35ba9167f1b059690cc0ccd6356d086b1bfec43c282fa10b89ad62facc0d650405873e1b",
    "signer": "0x3416E4B65cCfDd9cE7A5205f6a8A1E7F0Ff203d3",
    "userId": "885673575"
  }
}