{
  "manageEntity": {
    "action": "Save",
    "entityId": "34272475",
    "entityType": "Track",
    "nonce": "0xcfe1bd6175aad2ef01cf0439771a201700193a1b15f355450493a62650a875ec",
    "signature": "0x3e0b950f72c9ba7457c8eacd3b6e56cc843858131e1a51e8989e2f4837fa44ca7b684621039e1c075d9645b7ca5b30389d8e499bf8c0d5aa51d71b74cc1c54d41b",
    "signer": "0xF08935327AeC6306C8d0eb92999567e5496848C9",
    "userId": "989073793"
  }
}