{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "444300595",
    "entityType": "User",
    "nonce": "0x365503b272967570ecf6cef6b1fe1034828d58d3286dadf2618ebe7c047af4ec",
    "signature": "0x858cdf4145b4e0e15a8c4766c056d2cebbf4e74e9c9f3b5fbd57f95fa36b1324598cb6a532594120c2487407e8ed6b8c8a1a3998eeca3e09ebfd17c325e161b91b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}