{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540831441",
    "entityType": "User",
    "nonce": "0x5efc2f4d99a047aca490b1ec7c78b118c88b7deade3555fd1835ddfe88af43ab",
    "signature": "0x163b7c050415afb6635f0181a21ec7b284ecbfbcc652322b478c7de1bb9ec20f4b52a6c7a2af56991603dda17f55518659f530481d5d1e2551a2c98e713eb69b1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}