{
  "manageEntity": {
    "action": "Save",
    "entityId": "1005781711",
    "entityType": "Track",
    "nonce": "1788274920416033042",
    "signature": "0xeff2b62975d252b5394a2fcca8795463aaeadb2f85a67e2ebcb4a094e3fd86940a0d30d6813c5ef54f6362080cf94af46040bb1227bd9160414c0c8103572b461b",
    "signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
    "userId": "827420993"
  }
}