{
  "manageEntity": {
    "action": "Save",
    "entityId": "28804022",
    "entityType": "Track",
    "nonce": "0xe1667ae0bb75e3f12b6077cf5862c532fa1d27b5165d62db814abf86316caf1f",
    "signature": "0xfab344e05ce7e6795519f25db82a831f0da2db3dfd4b8b21003c4da32464d1cb52276a190dae29888d31806211c464d0755247111bf262ce8e14e09fe20c58ac1b",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}