{
  "manageEntity": {
    "action": "Save",
    "entityId": "2082913339",
    "entityType": "Track",
    "nonce": "0x9a3c1fdfbc21c1da22d662d58ad0b23cea5fd5b30781c985a68b4ffe0182a6d0",
    "signature": "0x8de85f359f0b3de9abb6db42158c7dfa788250afaa44ea3c361d6fee0e7b225b5aeed29f879a76959a7e4022c9cdc0889c124657cecd30a8ec24a8ea047d6df61b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}