{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "923028519",
    "entityType": "User",
    "nonce": "0x688e9f14cc8aa3181f6bdd03620916c5a4d2d1daf305e640250afe271bf35098",
    "signature": "0xc9c56b632ffba6e12b568e979351ee276c6054266fecfdf1743f3b6ec3f2e98944b4179885317d2bb50bb237737b7ee0304efcbe060c2b7655b6368a2d04a6651c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}