{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x926777bf8ee8a1bd0c9af918ad642c0394f122dbbd0fbac668a479783f7a421f",
    "signature": "0xb39ead7265c8d3bb54f9470f14e3efed482449f319b3dcf66bfc772aa17dd06a250e144068f9eb5806fcc4bdc9d4eadf81d34e18445b8184d7abe3bff40341141b",
    "signer": "0xc57645346D4df520211Ded3E5Dd676C1E3a8746C",
    "userId": "546166252"
  }
}