{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xef2c6af8f610b27335eec41883b14bd3fab10967f6f7ae4630b221c293cc46b3",
    "signature": "0x1d4711d9ef2d2aa2a3925ac867d7d6622fa7103f78809b62b0fff591b582656110f50d2ee297e809ef82fe275481af376950b92911fbae067957d08c00e91a891c",
    "signer": "0xE567D491AE5c08cc86356663b936dEE6ae821719",
    "userId": "404802700"
  }
}