{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "45563517",
    "entityType": "User",
    "nonce": "0x40846f63bbd22dca0d90f90651f866f29eeb8e4fe9951984e1fd3667421dc6c7",
    "signature": "0xf9d3d9ae955a30eac5b4d8bd329c8e8442c9053900fd75e9219ad6609a956c057011601ab72f326ec8e7fbf2885030369d1a3d63472b680740c0a18ef54f83c71c",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}