{
  "manageEntity": {
    "action": "Save",
    "entityId": "1330332345",
    "entityType": "Track",
    "nonce": "0x4bd7763116be960eccfd8ac7ac37c3219d3537860b523d132dd7bf3804037e30",
    "signature": "0x27316fec531613c1cadddc743141ca0aa101355316a4f848dd6d2d04dbc715df416739bf37cb6b11398a65c7ecb2481a682b17d6514d4f6ce89c0ddbfba6fc621b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}