{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "990836999",
    "entityType": "User",
    "nonce": "0xdc67fef266f8e325e5a7f3bca4a53788175c30bcd8dbcb0a5c0df1d0740719e3",
    "signature": "0xad5a04fdddf1c5c00948ea9ee510a948c9811c5f53666c96e90fae19fa9c7e0139cae1a8938bc0a4c4b559c7b12b0a79c45bb6c191560c7e411021b033b147e11c",
    "signer": "0x5C13CD392EcB86FaceF8A07FC5B300833E86cD23",
    "userId": "167249"
  }
}