{
  "manageEntity": {
    "action": "Save",
    "entityId": "246102625",
    "entityType": "Track",
    "nonce": "0x441c88c95735e60a33bc8c924d4d75c588110433f7a27bca02884dcef40112a8",
    "signature": "0x3d3e0e9ae80d05a64f67e4ebe9c19f019df1b824c029ff73f540560bc06d8a4321442570cab62c867466b8f7016de3b75b2e86c313bf3020c2635202cecc68861b",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}