{
  "manageEntity": {
    "action": "Save",
    "entityId": "582890381",
    "entityType": "Track",
    "nonce": "0x7de79ceb6c0fe8a41fae35eaaf2fff6994386ffc28ff633f12bb49370be45cb4",
    "signature": "0xe69fa7d5ef66ed11fbb0186c1c89f84b45bcab8a954d16b11e9ea95671314a534a1df5ccd77636b2e2dc4e5386b121a90cc34c0c6278028d20517a162f5564ae1c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}