{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "881446128",
    "entityType": "User",
    "nonce": "0xf0d9d32133bafa520dfad93f5d2298d856f56f4904b0d036c5b8e3e3ff84dbcf",
    "signature": "0x8e3d199b3dbc0d9450a1b0d7e34a94faf1989547ef64b6260c7d12dda3884ce8369fb0f5eb76e5477aad0c22a05148fab173e7a0bae3757ac8acff2dffa1cf741c",
    "signer": "0x803D12d81F2B806755b3CAEB25cf152B4c0B66E8",
    "userId": "774076"
  }
}