{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xf53b87353b524073141112fbcd07b5a82a0baf51dccf24cbb5f5eb7777c5b4d6",
    "signature": "0xae9e9875a7520914e2687e888484edc02a1f28a9adacfc6dbc9640ec710ff81d320c3bad710dff762089940c90e36591fa4dccaeb8ab147b249ba843a17fe5ac1b",
    "signer": "0x257c9f4A9563d6A4a2bF3be7Da1738e167fcF295",
    "userId": "301719964"
  }
}