{
  "manageEntity": {
    "action": "Save",
    "entityId": "88025",
    "entityType": "Track",
    "nonce": "0xb81a09a2d8bd02c76ea144305c3689a91e391a132a55e9526a3d7a8222a384ea",
    "signature": "0x4d896a4da35b551439fb07c67f44a7c99b04fc75598779c4303e3f1f7804436b05db964fcf69c7276f66674ea6cdcae9b2a817ca5a71906e4d6f869d3bac496b1b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}