{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28721",
    "entityType": "User",
    "nonce": "0xd80b823d0c8116a31fc56292776bb9bd8c4b0200de2bf8f723940dc26ceb60ef",
    "signature": "0xf249d9a27759efa695fd61c01b3c43be7634d47252d3b7c10ed748549009ae7059d173d9acde6f6bfeac61550616e3170739c9b3d37fd12ceaed7612fcf694e61c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}