{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "807904117",
    "entityType": "User",
    "nonce": "0xbdbf783a94937a324ead44f00b5bf50eccc169b13a94c3fff944ece0c5c9b595",
    "signature": "0x409559d607aa43e1f2d133b72c2f391d00470994c2ca97704df8d495ca91624a50915394ed4b207ddfc218f9ba4637d9045d39d71e3cf1f6ad6c7947353eef9b1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}