{
  "manageEntity": {
    "action": "Save",
    "entityId": "283468850",
    "entityType": "Track",
    "nonce": "0x2a3a4d755797d16b9a0898c9e6f1876f3705050fe45fc58150dbd4864af48767",
    "signature": "0x5c87e232284d782ca681d54907390fbb2184e13bd2ed9a6f98cc2947e5cd49a341ad57b59cd5d138db6ea858b01ee63f8a6aa15bc87bbec53c0195fbdf2d5e081c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}