{
  "manageEntity": {
    "action": "Save",
    "entityId": "1176704465",
    "entityType": "Track",
    "nonce": "0x1be2c0b1911d5ba917b13ee47c0ef96cb9dd64b43f234b9c63759676648081a2",
    "signature": "0xf653602e97ad8477cff1c771ac89344246d49f17b914420a3f7828c4c3296f706b3fcd09d5c0f9cf16d987fce5e6a34bc6cf7025ae938e839f08ef852b18c8761c",
    "signer": "0xa8E11aa224d2579f5cbdb912866bCE84Eb10f9dD",
    "userId": "951616224"
  }
}