{
  "manageEntity": {
    "action": "Save",
    "entityId": "1729036846",
    "entityType": "Track",
    "nonce": "0xd2698e533ce7997fe63dfc0ff3458566e7c5ca85f612997ef432911e11e5141a",
    "signature": "0x1623a8deef73ef482984cf8aace2811e10e1883a277c8cf75ea7f5ac348a47d12a7f2423c2e4081dcb731b95fe37dc4b3bb3e41c1b9e271c2b034d724252ae091c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}