{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7701",
    "entityType": "User",
    "nonce": "0x73ce72cbb28c91fd3a0db0975b0631865ea94c3312596c60705af9f2ab356ac6",
    "signature": "0x139ab41589d7b2e3807b586ea23ca435b07152770ed8c58e861eda7b8402ee5d184cad72ff12d44dcc7f5b0f4b464810a102f775be61db443827f6949351e1e61c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}