{
  "manageEntity": {
    "action": "Save",
    "entityId": "1090071115",
    "entityType": "Track",
    "nonce": "0x33eb7eb03485117b56a24e7ff579afd8a38ff4af40b73d8de3d1da578713ce3e",
    "signature": "0x0cae4b9669703cf2b6ced0e9ab34bb1a0db4a950ba6f08e7d931f872e7ba40de1a24d293e47e5955d5186e5764010f49f1fa06e01cd805cca004ed396bbaac591c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}