{
  "manageEntity": {
    "action": "Save",
    "entityId": "46026840",
    "entityType": "Track",
    "nonce": "0x1ffec113c9c64eb3c59e9cc3b3b31114c9ae9b4ab5f910831db5e1a76463d809",
    "signature": "0x9ab6d9d1cc3421de121e12d3954c9b6d5e98c61070dbc6b75539bf35a4a57d3639888d6cc1553ccfdde60df762800ec230e6a194eab6cd8fda886d018f6f0f561b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}