{
  "manageEntity": {
    "action": "Save",
    "entityId": "1572605357",
    "entityType": "Track",
    "nonce": "0x410bda4bd328e954c49d03ef42a350954c491c40c5d4cf2357ae94b219450112",
    "signature": "0x624f5bc4ba484892b374a8934ecdc2f969e7ae62a904b09b6bf08ed9dce39c9c3ba649c3dcaab0bc3b07cd21582387d72d099c1e18c2330c92ec0142b1a87ab61c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}