{
  "manageEntity": {
    "action": "Save",
    "entityId": "967016",
    "entityType": "Track",
    "nonce": "0x0d50b2bf654a790b436f557a731ad314f1cb9d4ce2f250f071b60b19d1c46814",
    "signature": "0x93a5597aa67a4f6293873ed68bc9f63d14b034eb77619042742107a4f3e1e097286087601af0559e946ff3dad5c0a399cde13c5913d6d3d990d5d2753322874f1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}