{
  "manageEntity": {
    "action": "Save",
    "entityId": "1119601085",
    "entityType": "Track",
    "nonce": "0x79c83ffd7ea70ad13ffad81b2fc4055c8c7fea60ad107022452df4d69a008e5c",
    "signature": "0x0a6e9d3ccfb2f164960da07070e08c93ad2ff18d121c816ac51006a1b5eb153301a821310ce89e3071abc3dc35e634a3ab8a4697e6db025a6d6a994c85f93ff81c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}