{
  "manageEntity": {
    "action": "Save",
    "entityId": "461594705",
    "entityType": "Track",
    "nonce": "0x9b77bba054f411c29370083660f6690956758c55213642deecf9bdc701dc3668",
    "signature": "0x03026676b3b64e430ad7866b86c3ccbbaee1e9d1b0f4ef1c795daabbbf367eac6d6ebeae76975968b8c299f6ab7c1c9f63cf348730bf6a40237775016233e2661b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}