{
  "manageEntity": {
    "action": "Save",
    "entityId": "1084155",
    "entityType": "Track",
    "nonce": "0x3710f8ac980b6cccf75847d8a4ba5126dc0c7c181bc6b3c778563c3a7f446b7d",
    "signature": "0x8a7b1f6d7e26c529c173f81cfc185c4d03051af5c246211cee1b3468556bdb73769234279df3da0be845188cd9d00d5550e9b4533c21e01b6ba47bb29a1f01ba1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}