{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309421",
    "entityType": "User",
    "nonce": "0x033e1549199f23f5e47257d1e03c62af3ce89e6ad3d7c4fc4f66aeeec564853e",
    "signature": "0x3cd3be575c11224141ee9b34103ce814af5a68e3a0eaa062d7c9867cbd6d9d5c7574fd17c192002da5ff39536e27d9d0995455c9be1b172881dfda8460d050cc1c",
    "signer": "0xb7C7a8D9d12EBd1Cd438cB065E97280E6D7e912A",
    "userId": "984691913"
  }
}