{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x733ec5ee381658070dcfddd2f8f153b928c222927778be881250471fe6b7cf19",
    "signature": "0xc99e4cc118aad948de63769f9a753db1d3c6a612eaa93541e34d069d7be664b52a0768e355c75eadd0264167aaaeff1f397d664866b2e5bff7d55e6b27f7c3891c",
    "signer": "0x835055DF117EAed14327b39470Da45fBC7EDDA77",
    "userId": "568870688"
  }
}