{
  "manageEntity": {
    "action": "Save",
    "entityId": "313689159",
    "entityType": "Track",
    "nonce": "0xc62d1c7e4e22a7e259f0c8d8c1c8aca6cd6f4835078140eb062131d9d3a70f59",
    "signature": "0x2de8c0a6dbd375c4bbc7e8873de937cb73a66a9445e19e80cdd04ebc987d91750a6370f117d82addffca58a248391426486c00e71201f90b99f3bb911c251b7e1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}