{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "42402405",
    "entityType": "User",
    "nonce": "0x87db47b10cbafd3ed9fbb29528ea71b387d642aae9de9be18298760a0467e99e",
    "signature": "0xa4ec8e7377e4a7c6082c8919ff1e7a23b583f95cfa1f1b53affb33213a8be1bb4cd391d32800243978b7eec5a23f90f267c02356f414f033e1b51da8c2d751ec1c",
    "signer": "0xdd251BAFF66030C447dB8A83140Fb6d2eC13024d",
    "userId": "931459241"
  }
}