{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0xffd45906efdf2f41c4114eaf525a3e10abbac71444cd1a5ca9064046ed0568a5",
    "signature": "0xc7789e243d596f8bf1f27e00b14705546ff442227a4f5c74da4ea0a3acd267d142db7448d8d418980ffd306c7a0f3a85c62cac782ab6574b3234da256a3763e21c",
    "signer": "0xe56da5Fb5AAF30449E9e91827cc7A25B4EA876C0",
    "userId": "399987850"
  }
}