{
  "manageEntity": {
    "action": "Save",
    "entityId": "2006370254",
    "entityType": "Track",
    "nonce": "0x84671a443b5680a99871e1e5a8d060f82d10672661983feaacd59c938c130081",
    "signature": "0x1f9f520166bf1a18533224430c5c37f62fbfceb7293da15899618f5395f567fc1e14deda5b097148dd0a6f90fed1ba7ab6743f21c564b9dce6091572d890372c1b",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}