{
  "manageEntity": {
    "action": "Save",
    "entityId": "592641584",
    "entityType": "Track",
    "nonce": "0xdab827392891111bdcfe518486abd70ce991f0c26eee20230c186269c044c7b3",
    "signature": "0x3d3f5d5938559772a1c02b5086735a345b379d2af07984d8142fbb84847a46204a7c02cdb96c2742e58e0f52772a01cfb827dc53626c1853ead84dbad7607fd91b",
    "signer": "0xD07A680d4F48bA7Cc076c23f40870AccBbad1987",
    "userId": "16411799"
  }
}