{
  "manageEntity": {
    "action": "Save",
    "entityId": "1428416866",
    "entityType": "Track",
    "nonce": "0x27d183bdc2ab24d4a3d051a1e5cf24327163bb201286043b5b9ef44905a8347a",
    "signature": "0xa036b8742a8e120d80ea278c4b2717126566fa9eee57d447b8efe6ef94f81d1a1827cd8767ace6d6735d348942198bc1267ca825c5935bd90d0eef46d1fe8cea1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}