{
  "manageEntity": {
    "action": "Save",
    "entityId": "39199456",
    "entityType": "Track",
    "nonce": "0xc2b2ed4ec98cd76dd07b5e5d85f17d50f47ab87860debb0c3f293ee83097dc2a",
    "signature": "0xd98eae0cfc0437c548e781dd9417bca703aabb24fe6875c6d0fbf68560e7f5365553c9bbc47ef9d202aee319e24a4c49a0d0a709c010cdc325434a50d281ab571b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}