{
  "manageEntity": {
    "action": "Save",
    "entityId": "1800663908",
    "entityType": "Track",
    "nonce": "0x984547b96a0b3e35ea15ef0082cbd1b2597e735df4db618ce91d22ac3362fd7f",
    "signature": "0x1ee29cb3d330daf5331a733a4ac0e00cb6ef61c1233f83147e6e90d1906ddb317faef17d62ae28b96276315a7089399dcdea6147ab118d7f768dc156b72154fe1c",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}