{
  "manageEntity": {
    "action": "Save",
    "entityId": "83402128",
    "entityType": "Track",
    "nonce": "0x127229c7993d0b1333283c84b209eee158344b6dabfd0ac226b0c6ae725a303f",
    "signature": "0x3cac2dad70c875937e0f52bc33fb08095d46a51001d9a03277d9ecb249120cd14b8ac8d8752daf3fd4c932a33447caee633f2776a682ff32958d24135fe2d5161b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}