{
  "manageEntity": {
    "action": "Save",
    "entityId": "1119004",
    "entityType": "Track",
    "nonce": "0x69c2e4c1fab9081da7b135ef48008294e03fe14c7c575681edcba1206aee3f40",
    "signature": "0x8c39b12dbe297a7308cf83a21b6fc1426fea126eeb1cc9b4f8eb5c2c48fcf3c62c848c680b23a2a076d5b240ee524374554acfd0d6213096854567d33e4191691b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}