{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x557679d8304af708ac5b4b2feb4af088251bfb27fee7d1c8877c34cc98a5fb6c",
    "signature": "0x1af2bf4ddf492340467d889c82219125d10af038deb63bfe795bed489afb8bcd0b103298a5dd47c9206d37b66a33012f7286fa7b860582c045e40c146955be5d1c",
    "signer": "0x9acF8CBE8f2B0d51e756C58D6d1f946A8757602F",
    "userId": "428941685"
  }
}