{
  "manageEntity": {
    "action": "Save",
    "entityId": "1750577938",
    "entityType": "Track",
    "nonce": "0xefa8a7245ab1bf4ac93dee82c404722526ba017dc073ce08e043dc3f8196fe2e",
    "signature": "0x150409c28a3ba05df2d32b112a7731e563a00ead359af0184aef5d5880a1fbe2567f0ebfbeec822e8ba39275796221b48f580ad1f92d110befd81558556beb5c1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}