{
  "manageEntity": {
    "action": "Save",
    "entityId": "998088421",
    "entityType": "Track",
    "nonce": "0xad5496c6e1f8b46c05d29f053ed873214aae093e19688084152c06b10968d3d3",
    "signature": "0xa0ac519f1eeb8ec6ce2677ec82b57b11386029a1e23b3e9d3f172671656598e41e0204ddc1305e5b1dab001fc823f08f0dddb1d514f644025fc77189c95983591b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}