{
  "manageEntity": {
    "action": "Save",
    "entityId": "695526553",
    "entityType": "Track",
    "nonce": "0xf63a627d74d0ef9adaa7de192891d482a4dc10c2573ef235ad86eb5a7e3dc3f8",
    "signature": "0xf7914e53c4a93b07fa04b0addee05794f7389178ec65ef20b67197a4671b3ae8619e14761ac3d400c6fc77b7051005c20b9f8203371a9469abc21448746ce2e51b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}