{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x68deff9856f1f766c831b711007265705a47879dd1a5567e0db5d8dfe2d25e33",
    "signature": "0xc0bd9b7c0e50a44bc7cfbffb3a1b41bbc442a026052dc446f912573992e55eda3fe5cc805b6602eb0496fe860ad77d00f0acbc9b2397dcc1e5a978992318bba01c",
    "signer": "0xD4254AD111Fa4FF9483CbA633030cc1e2B6EcD54",
    "userId": "83712165"
  }
}