{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309891",
    "entityType": "User",
    "nonce": "0x3d70f536e26c7de507cad747591b9ab12d355c527de70cc018c0abf84af1a488",
    "signature": "0xfafaecf231b7ab08a9da1e0a3e38c16c6198d8aa098d65d0fbbd351a0db3621f7f95ee8c020a88bee0375a0afaae251403fbf6bee0dbffe4df55d9069d66a52c1c",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}