{
  "manageEntity": {
    "action": "Save",
    "entityId": "92043782",
    "entityType": "Track",
    "nonce": "0xad19c7113a7b0ce8aae410d47e7efd9cf61a86c716481da2a2f5fb05537b334d",
    "signature": "0xd9371170a56fa431af08b4afe38f50c91887ed49b0d7427920e70bd2b2654b1925c31f1f9c5ef94f1064867dc4f117ce02c645e8f79d8ca5c2806a69b76f9e991b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}