{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1334982",
    "entityType": "User",
    "nonce": "0x274e4b227f55094c728d5af992f654af7b02fa1399faecf3baaf24b4b02834fb",
    "signature": "0xe39d1e2f147cc295f6e63cd82dc7ae5b1ce4daed61b3d668182aaf625d8ff11040a96e1508dc7e96fcc3bfdcdca12ea31a64a9020745c4df9d5c52411e5c20a51c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}