{
  "manageEntity": {
    "action": "Save",
    "entityId": "1063591517",
    "entityType": "Track",
    "nonce": "0x79e4f0c6f5ff6cd59f91a0b871a277c60cd92bc25b34510f44176f6eb2f4b92e",
    "signature": "0x33650cfd77f359a022799429452c8f442936c935f9a5be1d7aeb2a970c4cd3e12e585cc6ef2b3074ebb17dcff5cdbf95fbc4a0ad7cee65717a7ae021b6619de61c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}