{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0xe72ef94d3b202f61476b0bd04a48b9ea6e191de1f45a3c7580ebe2f0a8dc448b",
    "signature": "0xda8c443a04ef83f6ca0a64120588bf9e6dc9aa2902e4884f91f7d30b2ef628ca0dca0d7c9feb9949f04f0956c7c83c856efb9608758e93a404c7b86c7ea33cf51c",
    "signer": "0x80BaBdd7604de656E45b52EFA056548D7C078B36",
    "userId": "790313179"
  }
}