{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1698340",
    "entityType": "User",
    "nonce": "0x32220b7341a2c7e44c344128ad02226d7084df98e2c5cbe5bd403eb4a1b95a0e",
    "signature": "0xc9d03e5e231430bcc2a206db5f49709079af567df695bce190f6d54eb3500d6c16e83f4c1f65ca61e8a4dc996b444abf76196b56bd86e496214ab7e5aae19ede1c",
    "signer": "0x12D25A7a19Fe8130A1f3de655f59f1ac38Fe29fB",
    "userId": "566281511"
  }
}