{
  "manageEntity": {
    "action": "Save",
    "entityId": "1360505625",
    "entityType": "Track",
    "nonce": "0x4931b4b675fe7c32c192fd3734a3b7f9046431ab64dade352824ab40dc5e978d",
    "signature": "0x5848e659955a5b838410252b775fa5f87b99f8216ce0d04c61bbd6fc1cf388db3e24136889ac22a3699575f533c02af2c04946270bfec4ca00ed0038768d839e1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}