{
  "manageEntity": {
    "action": "Save",
    "entityId": "28298021",
    "entityType": "Track",
    "nonce": "0xbe985f0bb7887c5b2a8d4bd60e7c2eb96f8d7fe1a1e641f24d3b1702a978ac26",
    "signature": "0xa84af1e0f3c34c50a753b8a24faf5d4a00349991775bac326d5db8127d62642a3d2bb80e048e7dc2b4879f7bec0f596f3556c9fcdd37a66778427586e661fe581c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}