{
  "manageEntity": {
    "action": "Save",
    "entityId": "2033384594",
    "entityType": "Track",
    "nonce": "0x08abb5285f185e81b6cb726803065b98bfa36931c9ae6c384c6586f096322b2a",
    "signature": "0x73dcb6334f508011db67a86fbcdd6d356df3cfb3f3c2091aa12e6b0ea560f1346d6db61cfb0d46c78798720f96ea9f5f6c4e7c90e3ddc49493b8d60ce9e87c5e1c",
    "signer": "0xD9254B079e0e1571E56512C57188F2eec899054f",
    "userId": "854498636"
  }
}