{
  "manageEntity": {
    "action": "Save",
    "entityId": "170686",
    "entityType": "Track",
    "nonce": "0x9240d3a1ce37539c72f105e3c5e57b68d44953a32ef0c5c6a10ad0ea65414415",
    "signature": "0x721d603e57855b6069c826ea3ebf60f9fa92e4ff1225713872a271e17eb108e41ab0f47f3d95f27a84733a538a8865d890c47c3f71f4cac66e73089587edb1441c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}