{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8a9d14245f45635ff67b3051428d946a80f71e132a28cc76ea6b8d84e3170659",
    "signature": "0x799ffee989628db14bbaf7f87164ba181c22ff17f47b10e793b2c758de5b3ebb1f6859a471a2183ce7f9467b48c236412b10d5b08f9ca958bce8a17d700c794d1b",
    "signer": "0xAA5d7D6364B678d1385199130696Ecd6212EAd36",
    "userId": "39831487"
  }
}