{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "750588",
    "entityType": "User",
    "nonce": "0xcef6db4efc0002f7804f36cb006b07fc55b553b22d65709d4ece58efca1270c0",
    "signature": "0x100fbf38737602a995d33783c41e8dce6492346c14a7094a498569bdd04764d95d62772ec204d46937458b8dc5291b230f4e31fe34511ec468e1ccfc5b5a9f991c",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}