{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "223637",
    "entityType": "User",
    "nonce": "0x7e54237cb9c3c8ca0534a76b745885c4cce638947992ea038b28c40b7b49181e",
    "signature": "0xd1e67e15d6cc6c45114aede67e5a8259b0468faf7b2caa95d584b8099678d0e128a706c5eaa616f0e66502041a112064c28f02cdcd276f7cb0018b809f9ebc421c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}