{
  "manageEntity": {
    "action": "Save",
    "entityId": "1927975925",
    "entityType": "Track",
    "nonce": "0x30174edf9a23140d2f17ac601b025b3f603d52240bf92d03e60f68d299986b47",
    "signature": "0x5e70c2073c7f8b7852d610ab1240cd896fe9bb0a368d8ae9998263d83536c5cf577615151dafe217ad0d9561f8ef7ffafee1aff321cf01c3e2db3e7fb47f91c01c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}