{
  "manageEntity": {
    "action": "Save",
    "entityId": "1135910003",
    "entityType": "Track",
    "nonce": "0x256f3b72abe49656728d83e38aeb89fa41a57a74175b68eb95affc69911d16b3",
    "signature": "0x7eacb9dd0085c2c0c73a5abe7347f953c64e1cafe0aa999e30538f14ba60cb1e64351c3d31df3d491025916b206b3c1fe21b03e8434b4bf4f20d65c46856750b1b",
    "signer": "0x1642AB480EAD0cea9776277347Cbd3e5Fe9889f6",
    "userId": "711757920"
  }
}