{
  "manageEntity": {
    "action": "Save",
    "entityId": "1700710623",
    "entityType": "Track",
    "nonce": "1793578182864600019",
    "signature": "0x80f77b50cd4297079cbcd5a0143599e96f7cf902a328e01e9198712d25e2bf0265123a46f6470ce82d980ec6fb74221b7d74b27b60172a536b836a582bc91ebe1b",
    "signer": "0xE9e5656ce6F7Fe41FDbCA982901407eB55765cD3",
    "userId": "670307808"
  }
}