{
  "manageEntity": {
    "action": "Save",
    "entityId": "80482403",
    "entityType": "Track",
    "nonce": "0xa6ab52713786580667b313d79fe204d6863fe29e1522f4754feb9177555e84ab",
    "signature": "0xe9f50cdfd3d79061e2d7d92bb3c675e537573faed4817fc27d1c47c8f479e9794d68e50a80d5fae8b9ac93f4e9c6b59f709c1869b7dfce0d654d969d6639c1241c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}