{
  "manageEntity": {
    "action": "Save",
    "entityId": "43026863",
    "entityType": "Track",
    "nonce": "0x3833a98b992b38cf3839ddfe45f0945ec26abc5d80c90c02518c78ba0c503fb0",
    "signature": "0xceb9d8633abbd6a8ddb5372a9df1a85a6c232e436a7df26921af6edcee8a6ce532811042365bed62162ce1d323122dde07bc16d0c59807df6596ff20cc4c603e1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}