{
  "manageEntity": {
    "action": "Save",
    "entityId": "1064538534",
    "entityType": "Track",
    "nonce": "0x4d7322b168d60c8dea2766ce49220abb95ea6a0f2fbc06408b6e362e76485ef8",
    "signature": "0x4d9951f60f2ca223f0df796e3348403a9f1a03758871bf0560874c169ff4f1752a33d065821fac3128e85659aac2642a1f36244219783f2fc051e6b229ac58861c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}