{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1ff4e69de8827eb9a592a536d6709f785a661cef8d856e9d73e446b7e4799570",
    "signature": "0x644f0d0758098fcd3cd5cbef8fb16acc3d8784a10ed87fb5a1aba3564c94215233df842281464259d61071fae6ecd98911f2c43fe1e70efceb2bc3cf5dadc9c21b",
    "signer": "0x354F77f4De41770d75802956988DC62502fCf0A3",
    "userId": "955651692"
  }
}