{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "897648338",
    "entityType": "User",
    "nonce": "0x6abed90eb694ab2bc620af18fc9e02d32158a3b9271717def29fea4d5ee00e47",
    "signature": "0x7b4863457dd8f6b6c127a98fba875a39e630a9f2d4ed32fea2c63e988e34d0b450315a8f3faa604179f34bc9c77693f8ea0554b04306d3c22d915b97bdd9d6f41c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}