{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3679c9927930c1406d7b1fcece2919bfe05e7d37a862023ac7107416c4a84d34",
    "signature": "0x4c53afd5ccac52cad387fb944f52dc1b392ac609e6a639d826f2b5d6b41e29cf05f83fd81a635641fc40adf34fa20c227fe4a619d08d1479e4afe676433d8c7b1c",
    "signer": "0x6CDDC7B674Dd0fbE8fB2850B79b97aA2A37Aa071",
    "userId": "218692613"
  }
}