{
  "manageEntity": {
    "action": "Save",
    "entityId": "324660302",
    "entityType": "Track",
    "nonce": "0x6e8561fef3afdd124aaf6abad6f6f964b2d33f1933d3c4c90cdd437da8b7f708",
    "signature": "0xfea2246e0a9b5da5ab924987cb2e4e248a3bdd56d2d06efeca1212fd87bd308d398e6b2061951721694b3f87310c7a2d3215208827702fa166afd68ea84c679f1b",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}