{
  "manageEntity": {
    "action": "Save",
    "entityId": "1366629882",
    "entityType": "Track",
    "nonce": "0xe72b82e5494132a9d9e6a8f4c385d1ea6c52ebe9fd05ed8d31c80e31c5ebcaf4",
    "signature": "0x5f782b16a7297c8a24edde14babe205a096efcb467458d9578d6a70807ffca5c4741c20027324ee105ffdf7b5f1e8c3367c998c60350636f75528b1c239b038e1b",
    "signer": "0x2B171214e998033E806F72301307B2160CD94DdB",
    "userId": "489165782"
  }
}