{
  "manageEntity": {
    "action": "Save",
    "entityId": "1768912075",
    "entityType": "Track",
    "nonce": "0x3faa5574094020a610d5c9347ea8571f96856d235ffc8a261bdaaa2f6704fb35",
    "signature": "0x3dfc2a2cde43a983b49817b101e3cbb26aa8ca6cc739e0a08e4e5e5049a65c87516d9e4ebc6e2756629afabdc780458ae1997aa94358961da4c1d129f7b08d181b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}