{
  "manageEntity": {
    "action": "Save",
    "entityId": "1522223710",
    "entityType": "Track",
    "nonce": "0xd1c2436566a6ac155ce2d6c15ac9d3f0336572291bdb4bbbd3ede9f6ec14618e",
    "signature": "0x166bb7b2c08a8eef935fb16bd2d7431af086ec713a10f9d62ebd26914b3e224670cf617f9f09f97adaad7a63799af415d5cc900adda16a7fd483ddcbb128943a1b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}