{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "770725415",
    "entityType": "User",
    "nonce": "0x8eff0708dfb1240382ba489ce11f2146a8a6d56a809a71b3c0d7fdbc16e554a6",
    "signature": "0x98d8ac08123097073c2d2096c7a508f799be018c9692e92c229ae813983d43714407a344b3a2232746e424e6609014423b452de3bb663502eb5c1590e4427a961c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}