{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0xd1583830f22b14d60b343f953eb2d2dc701d9cde8dfea4bd5af6c497c969fad2",
    "signature": "0x1cefc2f13a8d38daa1bdd481fd13e151447ce835a6af031856f6608d1982040914508a055a44721b223bb8703d8a9c06147bb81c920e931985990b69de3993041c",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}