{
  "manageEntity": {
    "action": "Save",
    "entityId": "1060711172",
    "entityType": "Track",
    "nonce": "0x9f3c27d32aa958f960a7a6fd416d4c99896d0a71ac72f72b04381898354ab164",
    "signature": "0xac780b29bbbff3b17090b0707cbfb790983e2f83954f449fa9a31cd02b4b1ec607558e794999a9172e995541ad487d673a0c10794525722779ae19d5824b6d591c",
    "signer": "0x4A3D09CdfD42dE4C57dc67B09a40B5d9172bD69f",
    "userId": "787102835"
  }
}