{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x4fe5aced39647efc5b31d4433228e7fba1b38f4fe244248a058e736dc5d11732",
    "signature": "0xe93571982a37f9e9c06ea8867d43d15d48aa648b4139b8aa520b8681847d98d17a10291f92d6c199fac51464e01b11ec26db2c633af71e945e41f412894f35391b",
    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}