{
  "manageEntity": {
    "action": "Save",
    "entityId": "2014296180",
    "entityType": "Track",
    "nonce": "0x82aaefef0035d91dda65dcc131b9f66827ed9cf400931a5121a8c33de4e23ce2",
    "signature": "0x8fc570dcb09f94b1ba2f60f6c0c9bc7c649f389f3eaa5c5acd5b8bc4aaba273e424d208d15e3ea17661b8bc5ef22a91036a13aa58539b1f34acadaaf84c145b81b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}