{
  "manageEntity": {
    "action": "Save",
    "entityId": "2119703085",
    "entityType": "Track",
    "nonce": "0x68b36614e749f9df19ded27457cea83e03b1f76c54eedd308d07e835e7eb0017",
    "signature": "0x20d706b741fa070ba67ae54ca8079aade0a70120ead13b007177973b3d6193e92564e070abaa3133694e9edcf6bf8b0f7ae6cb5293a710ba8e10a9ded560b4921b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}