{
  "manageEntity": {
    "action": "Save",
    "entityId": "1695999576",
    "entityType": "Track",
    "nonce": "0x468dc6bcc2e7e2794b3946a4e97b63a772c378d8693c94911bab32bf50c3de10",
    "signature": "0x62ac524918d5d24f4b31b15ceaceb3534e43c6b62ee3402a06dd97e02db20a3c34d63a2ab2a3e3627e8aedf687164ce91e798f7299eaef0e8ff347988c9457731b",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}