{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "213653",
    "entityType": "User",
    "nonce": "0xe16ece63f181f7830049bcb5ccaf56782347058bc5c39e5f33b5452d70a8b419",
    "signature": "0xfb69d0f703683b70746450b0a5f85a9145ada0d4ebc9174685caf90bf46a3afe1e47332deaa598982f2ec8c03d6bd213f44f87767513e6eb58631d1af9f67a751b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}