{
  "manageEntity": {
    "action": "Save",
    "entityId": "1122564",
    "entityType": "Track",
    "nonce": "0xecece09e4a1e6823cbedc7bcbea59910514c3294e6d2fc8228a41d1f8790db0d",
    "signature": "0xc046318f9c502f6b0be59e808265953c9cd35bf24233c214b34237e7de33ca5f30a1b277e3be6bdeaca2e0d0a6da9fb54b25afb6c233b1cc99ab0225fd24e77a1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}