{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x8f7ca6c68f349d4a4e151955361cd3684f01f5550d372440d0cb5ceb6aced638",
    "signature": "0x1cf22171ff52ba24e3b296b5183a478d363578a597bd83e2ae664220d24f93c77ad744c3a8cc968bb74578b3348ca25db040ffcc48ab74ead94cb40cbe588da01b",
    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}