{
  "manageEntity": {
    "action": "Save",
    "entityId": "1426733954",
    "entityType": "Track",
    "nonce": "0xbd0a33fa509c33a8fff93974dd06dba66f754e7875b56204bb2d9cbf1efb716b",
    "signature": "0x6efcc59ffb1c48d032a8a6af2dbfc253e7af0ea25c3866a0bd6cad0ed5e057ae73f75f8ca00904070c92b2a9893a076f4cb1c4cf2897abed58956445808d6a8e1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}