{
  "manageEntity": {
    "action": "Save",
    "entityId": "1753819879",
    "entityType": "Track",
    "nonce": "0xfcfb762229f67a1b2b5e0cb61ea2bc7443e87af13076504181c2afacf8d82557",
    "signature": "0xc5c58148618d415a66e80680171dd56bb2d996a8a15a3b3c6369c4aa17c543ce686b2945d48a9299c50a0082db7b785f17e6e6e52edf14fa5c2eb54869891fdb1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}