{
  "manageEntity": {
    "action": "Save",
    "entityId": "861624698",
    "entityType": "Track",
    "nonce": "0xcc892a5947a84e15249f24adb147d8384fe887d24fa936e9fcc960e367e0ea24",
    "signature": "0x7c5b67ee9ae45e4b16764b1983f3c80518024b3d78afd4c24f0626fdbb6d6aaa105595dee81f3856e709558e6ad482971211e355255bc02f13a113bbd109ea111b",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}