{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456716469",
    "entityType": "User",
    "nonce": "0xaa25c696b0bf0212c704266716c7727714783902a728945a5cde791b8c3daf3c",
    "signature": "0x448b28dd42211872b2a3e24dfb6aebcd0989c4496c3a0827c3b7d17d2c5c01952742edfdbec15680f0900302373a916d8b927c00c64f412f31006e39ed07a81d1c",
    "signer": "0x3D472a01Cb831ac594835ac6038A4346E2A22B94",
    "userId": "327343"
  }
}