{
  "manageEntity": {
    "action": "Save",
    "entityId": "1006806",
    "entityType": "Track",
    "nonce": "0xb6afc57aeffed29fba8a48873c2896ffab1bd66f7492cb7a802eb04b86aceca1",
    "signature": "0x23d49068054ae95664c62a4defe47467e99255f152e9666a1c4872a6c8ec33a006c8195735edf586b02debc2316cedb29422c1443d2004e83fa621cd6f326c2f1b",
    "signer": "0x849b8180f084363b37768C823c174C9786020A66",
    "userId": "817339612"
  }
}