{
  "manageEntity": {
    "action": "Save",
    "entityId": "109097",
    "entityType": "Track",
    "nonce": "0xe85c09779f1e41e171c7298aa4a61e976a797458e19572a26fd44f7572b686f8",
    "signature": "0xcaf3db883fab8e1cfd1d06804d8d47c398cff69ab4bfd80124c0f8adc6845c0b12b65d68195b59b1e389ff6ebfe42a8b00ce81987b573bdfc369a707f941d6d01c",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}