{
  "manageEntity": {
    "action": "Save",
    "entityId": "1673758253",
    "entityType": "Track",
    "nonce": "0x1cc9d7ea33e54c5bf84ce032904e86094a77b89f3efa858dc9d7ab774e1f5573",
    "signature": "0x06ac14f80b8be315b32b16ac1a87ee2784739e338b7499f908f89e1b6adc29aa5e300e125f04a694da3670d15f2d949cddaa2fa3c9835e772837888d94a5fda31b",
    "signer": "0x8097f7562D3D2F9cbdBA391c45c0D376E438625d",
    "userId": "51978829"
  }
}