{
  "manageEntity": {
    "action": "Save",
    "entityId": "276348054",
    "entityType": "Track",
    "nonce": "0xdf24f3222f258b98c28191a357c7208964a3fa3b98325581bee3f639b4af85d9",
    "signature": "0xfee51fdc706be962f42d795a0b78037f79aa54edb8ae8ac6b49bed6f9f115bde53f5bc7d0b385ede47c77f8214bb700dac1f39071285913a7cecbb0dafcbcdf01c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}