{
  "manageEntity": {
    "action": "Save",
    "entityId": "1359765206",
    "entityType": "Track",
    "nonce": "0xc40bb6dad926e000d961686a78809dd446d169a390827e878741abbb81a45ef2",
    "signature": "0x09ba6f85839bb46de842752acf394aa8e6325af479f1d481a97f7dbd801bb801179514fd1e8792751f7c7a1c63cbf32abdd34bcc34ddcef999e6f3eba859400f1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}