{
  "manageEntity": {
    "action": "Save",
    "entityId": "86916274",
    "entityType": "Track",
    "nonce": "0x79f661fe767f1f6d4987dea5116320f8bc5222317bb246b17d4fcf6d80a27458",
    "signature": "0xd06caa832623079da8e9129fc55288635dbd6bdb844906769dface3c596bb25d59d77c3533cf15e473ec7cdf485661e91c20cf1c79c6814c50cd36e2c382a2101c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}