{
  "manageEntity": {
    "action": "Save",
    "entityId": "1349349895",
    "entityType": "Track",
    "nonce": "0x474ba218bb4cdbf1f0ffd527faf8f723d1a9bf03c74299e0bb7f579ab206973e",
    "signature": "0xbc65e0ee29398d134cbcf9ecb1f29aa045184e2e1989631356f8a592671bad1148455069a6bd0c1bf3be81ac5f571eb0dd78d18623ed35692b0a1a080928e54e1c",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "175162"
  }
}