{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "249000877",
    "entityType": "Track",
    "nonce": "0x9c150d7db0bd8a9adfad75532fc717d62ab08793e86c0f087b7bc1ace6cd1ff6",
    "signature": "0xe669865b942aaafaa293d7975d0509c68435f63f0b1162b063b280207b21d3f224ed65a1ecbf75abbe4712ff57bcbf0a3525b8383f424d534a757825abb2fbcd1c",
    "signer": "0x6CDd0c0FFBA25fF3A1e67aFb0149c464d2220E65",
    "userId": "675469944"
  }
}