{
  "manageEntity": {
    "action": "Save",
    "entityId": "1279290716",
    "entityType": "Track",
    "nonce": "0x5163fd351f044c0a839d26f3915602eb4ef8e53d6a1f742e439ab52b6b3d6548",
    "signature": "0x25e75cf0065fb36d4a379dab2969e5b23ae3e774bb15acf0ed3caa66da119c1e64be49207b845d2eeaf9ec19dc0e39839305d172b387b8ea1e157529b0bea1a61b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}