{
  "manageEntity": {
    "action": "Save",
    "entityId": "82106",
    "entityType": "Track",
    "nonce": "0xea51fd3765b09195af75ba931e1c7965aaf96bcac577864d82e1d3a9b1c98a0f",
    "signature": "0x21fb788072247802a7f24865e5a7cc5399867afa18c87533f53b260ec8caaafc67a1dfd40641f00683a6bcf134d075c9877b160b38ba239ae78878138df120c21b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}