{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfc1d7b9a33331b9116b87f32fe73172555b8bb1526f523443c2eb8e1b44776a4",
    "signature": "0xb2a814292ff554a7c6644e99fd1e9dcbb16e7dbc6ce4df5adf547bc944118dea58bda28fb14e13ec78d380ada3bcd6259133f9d2e9551f56a9c2984274154bbd1c",
    "signer": "0xDB5A147AE53021265B456ec04644E288A253C513",
    "userId": "275799540"
  }
}