{
  "manageEntity": {
    "action": "Save",
    "entityId": "1003717",
    "entityType": "Track",
    "nonce": "0x5689772f3d8e3d147e8d880af8878c6fc2f8d9849be5affd4119f1a44565a1e6",
    "signature": "0x20f0c057c5df1c906d7109109a005468123e861f0779110646c32b8bc7e52df55712e3dcbab5dfb9d75e4036bc955ab3d9a6e4410f9683b05efd3420b534c5971b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}