{
  "manageEntity": {
    "action": "Save",
    "entityId": "1651500640",
    "entityType": "Track",
    "nonce": "0xa12070d71a2742ef1d7d6d8d471915cbb0acb800ebbb10c816df6507d0585404",
    "signature": "0x793746287d8a1e0057f976f51fabfc9da23693645ec86eaab55efeaa2df96c5a2fd26b5f0cb5f04f20bc8a5b1cf046499794319773713a91b580ab50046ddae41b",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}