{
  "manageEntity": {
    "action": "Save",
    "entityId": "1476460501",
    "entityType": "Track",
    "nonce": "0xa24ab6289e1ce1563cfdc8918391916eaf15fba93c1b75d5340b692afdc14285",
    "signature": "0x03904ef0c9e7de80995ccba5842968606eb62dea8c3126651f873a0746c86f702fd35de1f9d1b99cc71cd201c25240dc5e377a51b556625663cbf7905d34b0131b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}