{
  "manageEntity": {
    "action": "Save",
    "entityId": "2116986004",
    "entityType": "Track",
    "nonce": "0x14ef0ef82d63e0c3d3f28c24ebf7a0ec5524f8665fed6b67776c1a1485e0229c",
    "signature": "0xb5d176b27f1f319eaecec6b6358cb08ccbf6a103b4a1bc19d346d2c5863ded057c0718223636e943bbcfd847a8dd3456780f1111274bf1e079484a2ee35af18e1b",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}