{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55588",
    "entityType": "User",
    "nonce": "0x802868b9cf8fee920cd0058a5d370e4d5e93b9513d279c86133ce9accbbb8e69",
    "signature": "0xe1eadbba2c2418b8caeeda9c1e992efefe61fc0ff7e095839fca137a1221f63334aaccde1d45a6349c6949eb0f17cdfdcd59d9df5c87e5905a6dc87b9b231bc01c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}