{
  "manageEntity": {
    "action": "Save",
    "entityId": "1627173947",
    "entityType": "Track",
    "nonce": "0x39749584fe148905f7c4ba3fd33bcce7a60a9d6070e414584d9786b5dd2a2020",
    "signature": "0x57aa9f31891a09f64298b6e6dc11a713a3c00d77ddb5590b96701d6df7c525645f219bb60ba78ad62f1f072436639ba298f8475fbb83c59850310e7b4aaaa6821b",
    "signer": "0x06a6c22176E3A2b32034BFb072481f93032b0cDC",
    "userId": "441213044"
  }
}