{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9e5d47c15bf82dd65975bf7baec6d5c732b9440fa0d65e460ab598e041d58b6d",
    "signature": "0x4917a6008c9a4b3fe7b3ec19cc692f7ab1e223c0e408118b939f854470bf751b03278ec91893b742a9a97ed1ee3b19131e7880dac5140ed435e9bc4c11b730ae1b",
    "signer": "0x9BB87dC82C21490ecccBa3bEA242468C35b50082",
    "userId": "815721745"
  }
}