{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0xe2aa9278a7ac866a53f70a349d5ad537c541d256496d4b07106b6535999c9b27",
    "signature": "0x9853c0c192625fed5c7308b5b3f5a88b7914309cb6d2614ba21ddbd403f7a9e72f9bcc1e999f3890f4d29d3dfccc16b8ceb69a6d0c219a10b04f932782c7bb441c",
    "signer": "0x80BaBdd7604de656E45b52EFA056548D7C078B36",
    "userId": "790313179"
  }
}