{
  "manageEntity": {
    "action": "Save",
    "entityId": "115599539",
    "entityType": "Track",
    "nonce": "0x060408a7e6c6bd793b71f32be6a5b479faa72183cc3ea42ccbaa680f41c68f9e",
    "signature": "0xea2c135d6290ff10598d0014b9624fb006d0aa25e77660f0692060893d316b3d1c312318fb05cd4f3dbd9c8cc312b946ce3ed12910466309a4d8a1a5d6285b761b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}