{
  "manageEntity": {
    "action": "Save",
    "entityId": "13041847",
    "entityType": "Track",
    "nonce": "0xd224be61c0832e9ca9aabbb55e333836a97e36acba290b7a9082c0582b090b94",
    "signature": "0xe02d13c76e469502f857518d1e6de5e3f6b5ce5b91ce59be1e9f2eaf1712665410de7d1e79f1c6231c648284097956314acf2df13daa0f0475fcda2602f2b3021b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}