{
  "manageEntity": {
    "action": "Save",
    "entityId": "1984064487",
    "entityType": "Track",
    "nonce": "0xea5ce79b212d748eaf47e7ec6e919ae4e8c5b216b19860dff1dfb5a0a5d9cec4",
    "signature": "0x28a1aefe5af80cf78e2b08f007c8480a269d3b1a4a19efb048ee143ddcf00ed648fd479c5b38eae256681a4a022887b8bdfee033661cfbdc829eda32b8fbd1371b",
    "signer": "0x92328BFDeD38C9a9De6E253A0CF5CB46A3B28611",
    "userId": "831117417"
  }
}