{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "650714154",
    "entityType": "User",
    "nonce": "0x598be0d69cd3c8fb6f9b534cb998cafb69c5c66991befa28a2dae8a4ff900423",
    "signature": "0x8ae9fbbe4779dbf41539a244906b262ca210a7fe9b91e7c3bbedb0d56d6677172bd21335003015538ec4557bd69ee51188c7a3b53f29fb2b24a5bf273808876c1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}