{
  "manageEntity": {
    "action": "Save",
    "entityId": "37262542",
    "entityType": "Track",
    "nonce": "0xb9b1d02a84ef6087daaa577e108a98c360b03d39469e7a73cdca1ede13ad99bb",
    "signature": "0x783eda51542fa6840f54d9c24a395499acde8ec8f5c4a235764e9c334194495e7fe6fe66da3ed5616d5b7ecfa431ec9b4f76e35bf2da41717fb168c84f0c54df1c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}