{
  "manageEntity": {
    "action": "Save",
    "entityId": "692483689",
    "entityType": "Track",
    "nonce": "0x0c36ae301590a411e28c993970332b449b40ba9432d30f1b4ee0c445ffc20110",
    "signature": "0xe8e6008c4d8c5b56e60063514e73e07d1751a0eec2692ce29515e6af38483b9d1b8ff1c18d7b4c3472dd1262b0e00450abe20e871c8c41f727f68b7aa144ccbe1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}