{
  "manageEntity": {
    "action": "Save",
    "entityId": "1696723005",
    "entityType": "Track",
    "nonce": "0x26713f17e032a3021689b517bf3ec9ccdd50e99960c09e949c3b68dfe6fa22d2",
    "signature": "0xb3302a3bc677986ad82993b3332c6145a8d1d8bde56a39998cd568f8cee90b8b77291e324828894a9c3ec3b94de765bb1ae73d2d6b5151fc7592ebd1ae6170381c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}