{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12",
    "entityType": "User",
    "nonce": "0xf567fdcdb8903c160e914383b9554b01d7ffb15d1846a6c71729770c828627dc",
    "signature": "0xc3023567ebe64a6816e2f5c53057fa9b7d145ff4d1494e9adbbcc54bb392fef8274aa0ce6dcf4ea45cf8001ee06b7cb94fbd870f427a4a4b1179025196ece2951b",
    "signer": "0x98591a180A20DF036EB2C9D2c24B449E65939Df5",
    "userId": "338604526"
  }
}