{
  "manageEntity": {
    "action": "Save",
    "entityId": "1096732537",
    "entityType": "Track",
    "nonce": "0x44579ee203b8113844298330652cb4402b57b058ac8487f70bc1b5611e1367cd",
    "signature": "0x7293f3e6c144751a4ca3ad9ad2107967edd31b5486416cac6a37d2946c2dc24c00e5d2d2095a1a4fa0aa571f6bafb4eec465ea7de0b91739741bd643c03d62241c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}