{
  "manageEntity": {
    "action": "Save",
    "entityId": "1630677096",
    "entityType": "Track",
    "nonce": "0xc86ce0af35c694bea2bad929020034be96c509025befbe7e103c646154f0c3be",
    "signature": "0x83caa1fde59658f99b24b1f1e9362b6e4a46d7b5d47e10cd7080f0d75748baa43f285812d4fa1d35b7a5a8e654a5f3f280b130c6dca11ec792f3b086bd0742cc1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}