{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1167c9c05d33c301564cf7529417ebcf42b72e32bf747274a448168dec828547",
    "signature": "0xa3808dfdf1c2cd87faf7cef26a91607e2d6507fdca79be689f287cf5bd90e4a11c28c26ff12f5b219a527a051ccc2c2fd1a4b8dc02826bbb9e4e6a588578a08d1b",
    "signer": "0x28Ab11Ac2dFcb6b4CE9129738662eB55fa1B9bd2",
    "userId": "552119754"
  }
}