{
  "manageEntity": {
    "action": "Save",
    "entityId": "586471809",
    "entityType": "Track",
    "nonce": "0xbb3443f11c6c92787f3356f13642ba6b62561af77f64d3068d16b13a68222d63",
    "signature": "0xc5c840fba94d223f5cf0ad7d1633fd87ae4e28fb02edc536a2a0be08965f3745096ec8cf01e24b6c2750babc22e9ab962abed7d401c79bed78cebfe042e68d461b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}