{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa1138b3cf611642a3df450564854a2cba65708dbc1d0afc5f7d6b7e51caaf23d",
    "signature": "0x98ed82575cf659fab455929f0afdbe8d62176c331782d14c5abdc1592d7a803255f810dcba6628bbac792e08a19cbcd97042f3e222dafadbbceda4afe45212671b",
    "signer": "0xcaD75E11a32f03A9Df5E6D7DC4745D7Ff5ec81ee",
    "userId": "527987796"
  }
}