{
  "manageEntity": {
    "action": "Save",
    "entityId": "1928172673",
    "entityType": "Track",
    "nonce": "0x74fa7594116dbebbd3b6f281345f0b014f161a54c1a8fca2cd836fd63a0892e7",
    "signature": "0xa72ef9494b3e782280ead60037de9d817543a43428070f31f3ff521e1454d59f55b70aad43fef1c840a757cd9ff7fa48b240406fac6b1d031f83c9e84eb08b8a1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}