{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28573",
    "entityType": "User",
    "nonce": "0xe647e3bd0f81786776fc49a3c101a0ff6df34a28b4f3137ad0c8022e4f4eabf5",
    "signature": "0xabb08fc6ed0a50425608433626a5a01816f63d75fec632daad5996680e1ab208744caf31fa7bb2a8b5426cc25832c62fc42cae135e0510bd08c1b85fcbeb037c1b",
    "signer": "0xC965eCf215DC75172bD11e8E1dbE76EDd838886e",
    "userId": "260849"
  }
}