{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "779240896",
    "entityType": "User",
    "nonce": "0x0aefa8d79b7b35f4c0c3507ad9224bcda100dfc307db27f6bbe09357adab2bed",
    "signature": "0x5a64fe86aed794c9637420ce7c5d669b6a94e7e154406d3f148317ace19d1df02f399848bebbd7e41df5ccfd21d1a3f1dfe8b46ab13a867d3470013c3cee5f251c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}