{
  "manageEntity": {
    "action": "Save",
    "entityId": "1044433",
    "entityType": "Track",
    "nonce": "0x331c413e4f1209e871fc4aa3ddf6c155a241bb53a78fcc6b1ad29e46d57fef43",
    "signature": "0x99e905dd349e43f499de0b6d753f8ba7b04faad65a5aee7eec7ead6d5d5a1d5c7af0f829c72f19222eed05ba9e5166b18156fce9cdd3dae94b54d4a2d1fa8b881b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}