{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "372694271",
    "entityType": "User",
    "nonce": "0x3858df06cfda8968bed0d734d30878b3c519da58c245e69bef8c11c6d9356f6a",
    "signature": "0xad11d925b93a65bd39bb7238e1eb9765cbf39d8e0b4a3f7f46ad248ea5b3c5f229a70798bd62961dd81316f2eb073f260abed232546248ff02a9045efe4832561c",
    "signer": "0xc3e03c21664729d32A8E77189667f4cC5091E233",
    "userId": "498109"
  }
}