{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "497688",
    "entityType": "User",
    "nonce": "0xefa4e5ac012cdea688afcfb9d9eabd4ec973dcbcc2a444ed91b9385ee0621bf8",
    "signature": "0xc69de620bbea855aa6d3c17437d1ee85d4d69c37d8d15ac76b021319f77382396709b248200c7c89661df407ce9e02e41c4c87ef91de6c7f8e554236ae8726951c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}