{
  "manageEntity": {
    "action": "Save",
    "entityId": "2076370590",
    "entityType": "Track",
    "nonce": "0x218ac44702cf3d9f106665b5052aced2ac3c77c7198b12e1b90e9584815732d4",
    "signature": "0x601272e554cd6208df87e11ce692f3f0e841083c882e9d35e3fc313e71ebf12d0046392a9f0e72230bec12efda4728851621d28a882919ba0ce80782904c4f011b",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}