{
  "manageEntity": {
    "action": "Save",
    "entityId": "2081648300",
    "entityType": "Track",
    "nonce": "0x8084ac3c9d4af9a7326cd87ff210603f292ddee0e39dc11e01e1fded7ff9bd0e",
    "signature": "0xa95aa4a7ac135853389b3f2119cc736d43ce09b3c57d14ca7ae9794ea68c040070289065e88e5420945bc8c94618e81430172dc2d21f2464cc1bf4ae842fa74c1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}