{
  "manageEntity": {
    "action": "Save",
    "entityId": "195636",
    "entityType": "Track",
    "nonce": "0x39628e27c6b91734bd57e583e2eaa27cbb78ea78f3bd5b5d77f8d3e116675d9b",
    "signature": "0xb2607cb6ae36a2d45ca501fc477fbfcf6323b6ccc6f373e766834db89dfba675080c3ea26474084a68e0141c7c449f49b272b5a5b4181f510eb5f3f8201de12d1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}