{
  "manageEntity": {
    "action": "Save",
    "entityId": "1465397963",
    "entityType": "Track",
    "nonce": "0x01f6f1fdffb04d6b6744baa1efd02a784627d0e06f5420604f7ab2011cc34978",
    "signature": "0x4566ec3e29dd6522156d41970deb584bc8e82b91d68d0d7b396363cf75c336f40e5fa383a832b37594757f4f25f134cf5e177c6eccbe71bbe0f5d9e69291d7561b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}