{
  "manageEntity": {
    "action": "Save",
    "entityId": "234041",
    "entityType": "Track",
    "nonce": "0x806b6fe083bfef01311db897983de51f11b72576a4c047e42263ef86fbcb8485",
    "signature": "0xc0f7732414b17f042ab59c87a88e92ffda10aa7938403c05d3dcd3ea308c7449326f3a294a814392611568369d0808cb96d6038507e099ca6fdaebc6118960751b",
    "signer": "0xBD46d315142217685c7fE4aC6359DFfe663E7a4D",
    "userId": "409129"
  }
}