{
  "manageEntity": {
    "action": "Save",
    "entityId": "1106739",
    "entityType": "Track",
    "nonce": "0x7b1d355db99a87697d56df8c9af812920676195248a9a051ec614d35a3118dc0",
    "signature": "0x36f5316dc50dc7f1ec1cbfe2a8a9484f56464ecf216168122057619e8b94104020c6d3244c9278d39c71ef91cde71b42ab151161a6d41802da6f7b4b8d6ad7071c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}