{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "299215619",
    "entityType": "User",
    "nonce": "0x52f4682b8a9f831e6884ae4c3263047054f782c4ae34d6d0a41f6b2d5832b231",
    "signature": "0x84ffece07711451fccf8999af5ab41a99e9dbf8c043ad2a3231113fb6b85cef3178cb2a933dceb7e5c6e35813a8adc486053c49e301b425d497b31f485dd0f8e1b",
    "signer": "0x7468D94C16cbD90615fE37E8738620528803CF4D",
    "userId": "297931"
  }
}