{
  "manageEntity": {
    "action": "Save",
    "entityId": "1704170516",
    "entityType": "Track",
    "nonce": "0xd85e835d23a39656b3dd17884b0abac2c063ddecd1c7279b3d1c99a445fa6c06",
    "signature": "0x995361ff3300a0b21850df2d9eefaef15dbc0082c443ade45d400ee86a1524ff0767291e2f15b285f43bd9b9a0756242199ee44afde9b54902d4a96df0a10f491b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}