{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "73678",
    "entityType": "User",
    "nonce": "0x459ca75cdbd3c37f3afed84b9b74e804f297bdca0ff4d37e200e3a43689ad101",
    "signature": "0xb6ebd88403114f42dade98a6b775ce23d4a2ed8427bc933a8eb95007106388b31fa162638890dbcbc169518e705b9f09fee9d382901cdb0732662777ccf8c3581c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}