{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "151430",
    "entityType": "User",
    "nonce": "0x9b346d3e198719745c6e387ff04c1c68b51e64a60f2255da1f1e1df769f1e795",
    "signature": "0xccc525a87b1fe40ead24e6c6d29032e617ebc96dc80dd0814db712d73dc09b0e3c7a36d81085af3936d8c5e9412bfba1eaf56c87d4d6b5ab78fffc5285d6dd951c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}