{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354640",
    "entityType": "User",
    "nonce": "0xf8a9e6c9ab3dffe96db293838601928a03154df032aacd4d7850be0464025c51",
    "signature": "0x6eb6a25a30801ecd7e5088dbea4c8a6c081883f487410f3733052e4134eb7ecf2f9e221b27dd287b4cde3f710634f5bda772999fc3f44655ca519d861e082d5b1c",
    "signer": "0xcb0dE1B9981e7D13931d9DDcB14a7597369392B4",
    "userId": "121885"
  }
}