{
  "manageEntity": {
    "action": "Save",
    "entityId": "1085843",
    "entityType": "Track",
    "nonce": "0xa332f9ffce467caa6e4217b4e62a7248832e25d1e74b4922d17b2a8f4e68f33f",
    "signature": "0x4fcfacb66c3419d4932cfb3d15b58c61e7c414b7c68d4373dbe076878243648547ea7c729f605d3cfb9f15325e34da7cd93ef87077d37127e7fdc77930c22b881c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}