{
  "manageEntity": {
    "action": "Save",
    "entityId": "1044720",
    "entityType": "Track",
    "nonce": "0xe2d18adf0b26f22d814b460ea5d2df93940955277e2bf7fd1ee31df4ebb57c26",
    "signature": "0x56aa9580796a3357c35341eb1251eda80892923a7af0326b1437f68cf212f38b347e7df5c4e0be5c06044e78ce448232bcedee7ebb1b726630103fd0aece8fa51b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}