{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508186998",
    "entityType": "User",
    "nonce": "0xbfb9f4714e4bc2081f064c1c922f526bba604bc0862833145854ea9379f0a8ed",
    "signature": "0x7c5dd1b7d306959bd071246650e759555658bbd4d70f3cdb66221ccdfbbc05621314767eaeebc96d0802ae556616b5cf6bcbfdd44f3364e5b7f84d2264f935081c",
    "signer": "0xb68FB6A5ae9015De46D9634e946c04517523Fa43",
    "userId": "134619804"
  }
}