{
  "manageEntity": {
    "action": "Save",
    "entityId": "563418240",
    "entityType": "Track",
    "nonce": "0x036ab898f46f1c9032f61f8d8e16ffcdbd4a43ccc11eb5a555f39aa710817a95",
    "signature": "0x36fa5298599b30b06620136e7c944bacf9ab17f4f7608aa2536f7289dd5366287cbabaa521710f9a639aab7d30505b2192ecfbbd491e1a6de0e3c2f13fc74e6f1c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}