{
  "manageEntity": {
    "action": "Save",
    "entityId": "1042096",
    "entityType": "Track",
    "nonce": "0x4ec7a61377eec48e24db2e0f8769307efa37fdde0f150b05bfb2193b27dc5e2d",
    "signature": "0x4ab24daaea17476b5e6d4becf2d271bd86078d8d232a2f00ed4857a6e12145a923985356093764331f86a17441f04e2b72d25f3f7b29a98d33c663e0de914bd41c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}