{
  "manageEntity": {
    "action": "Save",
    "entityId": "25528565",
    "entityType": "Track",
    "nonce": "0x132a3c902d6f74c9aeec27d09649028ecf6fc49aab81f27a93ab3ee9c2d90978",
    "signature": "0xbde6e17f3a14cc1eb64845dc9c8bc39f131c7119a7238fae5b7ba732b85cdd4f2fc26aaebaae261480b6b61cd7a275f61073c05d69194f6f19e9fc91301832171c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}